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1. Beijing Java course shares the consensus algorithm in blockchain technology

We have shared with you many times some explanations and analysis of knowledge points about blockchain technology. . Today, in the Beijing Java course, we will learn about some basic definitions and characteristics of consensus algorithms in blockchain technology.

A brief look at the blockchain

The chain in our general ideology is an iron chain, made of iron. One link after another. Figuratively, the blockchain can also be understood in this way, except that it is not made of iron, but connected by blocks with a certain data structure. This is a simple prototype

Popular explanation of consensus

The so-called consensus, in layman’s terms, means that we all agree on the understanding of something. For example, we have daily meetings to discuss issues, or we can judge whether an animal is a cat. After looking at it with the naked eye, we feel it looks like a cat. If it meets the characteristics of a cat, then we think it is a cat. Consensus is a rule.

Continue to use our meeting example. Participants in the meeting discuss and solve problems through meetings.

Compared with the blockchain, miners participating in mining use a certain consensus method (algorithm) to make their own ledger consistent with the ledgers of other nodes. The deeper meaning of keeping the ledger consistent is to keep the block information in the chain consistent.

Why is consensus needed? Is it possible to not need it? Of course not. Without the rules of consensus in life, everything will be chaotic. The blockchain loses consensus rules, and each node does its own thing, losing its consistent meaning.

The corresponding relationship between these two examples is as follows:

Meeting people = mining miners

Meeting = consensus method (algorithm)

Talk about solving problems = make your own ledger consistent with the ledgers of other nodes

If you don’t understand the concept of a node, please first understand it as a miner. A node contains many roles, and miners are one of them.

Consensus Algorithm

Currently common in blockchains, nodes allow their own ledgers to match those of other nodes. There are several consensus methods (algorithms) that maintain consistency:

PoW, represented by Bitcoin (BTC)

Disadvantages:

The emergence of mining pools violates the original intention of decentralization to a certain extent, and also makes 51% attacks possible, affecting its security.

There is a huge waste of computing power. Look at the mining pool that consumes a lot of electricity resources. As the difficulty increases, not enough is mined to pay the electricity bill

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PoS, represented by Ethereum (ETH), transitioning from PoW to PoS

Disadvantages:

The cost of saboteurs attacking the network is very low, and they can compete if they own tokens

In addition, nodes with a large number of tokens gain accounting rights The probability will be greater, which will make the network consensus dominated by a few wealthy accounts, thus losing fairness.

2. Can you recommend any books on blockchain?

There are more and more books in the field of blockchain, and there are many books The quality is actually not high. I recommend two better books that I have actually read and summarized.

---

A book is "Book Blockchain".

This book is characterized by using interesting and vivid comics to express some principles and applications of blockchain.

This book is especially suitable for newcomers who have just come into contact with blockchain, because the principles in it are analyzed using more real-life cases, which is relatively easy to understand and involves blockchain. Technical knowledge is relatively low.

And this book is not thick, so you can finish it quickly. After all, everyone is very busy at work now. If you read a very thick book, it is indeed difficult to read. This book happens to be more It is thin and light and can easily cultivate your interest in learning knowledge in the blockchain field.

WeChat public account: Shenzhen Blockchain Community

3. Northeastern University Management Science and Engineering postgraduate entrance examination experience sharing

Northeastern University Sharing experience in the management science and engineering postgraduate entrance examination

I applied for the management science and engineering major of Northeastern University. My total score in the preliminary examination was 400, my re-examination score was 89, and my overall score ranked third.

4. How to treat the UP master Jianghu Juren of Station B

The voice is good, the logic is clear, and he does have a good knowledge reserve.

However, the things covered are really too broad. From ordinary book reviews, to politics, to economics, to history, to social movements, to extremely complex content such as blockchain, etc., he has talked about almost everything.

Among his videos, the quality of the book lecture videos is relatively high, because most people who read the book know the truth of "a thousand readers have a thousand Hamlets", so in terms of book reviews and interpretations , his videos are unique and open to discussion, and some of his views can indeed benefit people a lot.

If he honestly only produces book review content, then I think he is one of the most recommended up owners in the reading area of ​​station b.

But other videos, to be honest, are very average. They are somewhat similar to some of Zhihu’s hot comments. They praise what the public generally likes and criticize what the public generally hates. .

The core reason is that the content of the lecture is too broad, and the knowledge reserve cannot reach the scope of the lecture, so I onlyYou can pick up people's wits and repeat what others have said, or just shout slogans directly. It doesn't matter whether it makes sense or not, at least don't say it wrong.

So for some videos that are more complex, have higher professional requirements or are more technical, to be honest, they have a lot of flaws.

There are many opinions expressed that cannot be said to be wrong, but many of them are too one-sided, and some are prone to drawing conclusions, which is in sharp contrast to the open communication attitude of the lecture videos.

Of course, it doesn’t mean that you can’t express your own opinions on a certain field because you don’t understand it. After all, everyone is here to communicate and learn. But if this is the case, I think that when creating videos, At this time, we should focus more on popularizing the content itself.

Instead of rushing to draw conclusions about the nature of the content, there should be more "A thinks..." "B thinks..." "And my point of view is...", and then welcome everyone's criticism. Any corrections are welcome. Only open-minded and open-minded communication can be valuable communication, and the tendency to draw unilateral conclusions will become an important gap that undermines communication, greatly reducing the quality of his videos.

Speaking of him, in fact, many knowledge areas and many Zhihu big Vs have this problem. This is a common problem, and this is one of the reasons why everyone dislikes Gao Xiaosong. But it doesn’t rule out that I think some better up owners, such as lawyer Luo Xiang.

Teacher Luo also talks about book reviews. He particularly likes Socrates and will also publish some videos of post-reading comments. But other than that, apart from the law that he is proficient in, he rarely talks about other books. Content.

I have never seen Teacher Luo talk about politics or history (except in books and involving law) or economics, let alone Bitcoin. Even if he did, Teacher Luo would not talk casually. You have to draw too obvious conclusions in areas that you are not good at. Because people know very well that they are not in this business, and they are not the material, so they should not get this money.

Similarly, there is Teacher Li Yongle. Teacher Li posts videos. Although the scope of Teacher Li’s videos is very wide and special, including economics, physics, and mathematics, he mostly only covers popular science knowledge content, not Will casually draw conclusions about knowledge, such as Bitcoin. He only talks about the technical principles of Bitcoin and will not evaluate the advantages and disadvantages of Bitcoin too much. This is a reflection of professionalism.

Introduction to Bilibili

Bilibili (NASDAQ: BILI; HKEX: 9626), English name: bilibili, referred to as Bilibili, now China A cultural community and video platform where the young generation gathers, the website was created on June 26, 2009 and is affectionately called "Bilibili" by fans.

On March 28, 2018, Bilibili was listed on NASDAQ in the United States. On September 15, 2020, the "Bilibili Video Satellite" customized by Station B was successfully launched. On March 29, 2021, Bilibili officially launched its secondary listing in Hong Kong.

In the early days, Bilibili was an ACG (moving(paintings, comics, games) content creation and sharing video website. After more than ten years of development, an ecosystem has been built around users, creators and content that continuously produces high-quality content.

Bilibili has covered more than 7,000 multicultural communities with interest circles. It has won the first place in the two lists of "Generation Z Preferred APP" and "Generation Z Preferred Pan-Entertainment APP" selected by QuestMobile Research Institute. Named and selected into the "BrandZ" report's top 100 most valuable Chinese brands in 2019.

5. BT40 | Blockchain Thinkers Closed Seminar (No. 6)

Time:

July 18, 2020 ( Saturday) 14:00-18:00 pm

Location:

Online (preliminarily determined to use Tencent Conference, the conference number and conference password will be notified separately)

Blockchain Thinkers Forum of 40 (BT40)

China Mobile Communications Federation Blockchain Professional Committee

China Circulation Industry Management Political Research Conference Area Blockchain Working Committee

Blockchain Professional Committee of China Association for Trade in Services

Blockchain Professional Committee of China Communications Industry Association

China Agricultural Society Computer Agricultural Application Branch

China Blockchain Ecological Alliance

China Blockchain Research Alliance

Peking University Blockchain Club
< br /> Institute of Financial Technology, Beijing University of Posts and Telecommunications National University Science and Technology Park

Mr. Guo Shanqi: Founder of Consensus Economics (Consenomics), founder of the Blockchain Thinkers 40 Forum (BT40), manager of China’s circulation industry Chief Consensus Economist of the Blockchain Working Committee of the Political Research Association, and Deputy Secretary-General of the Blockchain Professional Committee of the China Mobile Communications Federation.

Professor Wang Zhongmin: PhD in Economics, professor, doctoral supervisor, national expert with outstanding contributions, enjoys special allowance from the State Council, former vice chairman of the National Council for Social Security Fund, 18th Central Commission for Discipline Inspection Member, member of the 9th National Committee of the Chinese People’s Political Consultative Conference

Professor Chen Xiaohua: Digital economist, founder of blockchain economic theory, review expert for major industrial Internet (blockchain direction) projects of the Ministry of Industry and Information Technology, director and chief digital officer of the China Mobile Communications Federation’s Blockchain Professional Committee Economist, secretary-general of the Digital Economy Development Research Group of the China Science and Technology System Reform Research Association, director of the Financial Technology Research Institute of the National University Science and Technology Park of Beijing University of Posts and Telecommunications, think tank member of the Global Private Equity Research Institute of Tsinghua University, and blockchain of the School of Digital Finance of Zhejiang University Expert member of the laboratory, external tutor of the School of Economics of Central University of Finance and Economics, part-time professor of the School of Information Management of Jiangxi University of Finance and Economics, expert of the National Development and Reform Commission's "Financial Circle" magazine column, and expert consultant of the Xiongan New Area Construction and Development Research Center.

Main representative works: "Internet Financial Risk Control", "Introduction to Financial Technology", "Artificial Intelligence Reshaping the World", "Uncovering the Secret of Blockchain", "5G New Momentum" and other books, 8 consecutive books In 2017, he was rated as an "Advanced Individual" in the industry education and training work of the Ministry of Industry and Information Technology, and won the title of China's Economic Leader of the Year in 2017.

Invited to be interviewed by CCTV, Phoenix TV, BTV, China Business Network and other TV programs. As a guest, I have been invited to attend the World VR Industry Conference, Digital Expo, China-ASEAN Expo, China FinTech Expo, World Internet of Things Conference, China Integration Conference of Informatization and Information Technology, China Electronic Information Expo, China Higher Education Expo, etc. and gave keynote speeches.

Professor Cao Huining is a professor of finance at Cheung Kong Graduate School of Business, academic director of the MBA in Finance, and a member of the American Finance Association. He has taught at the University of California, Berkeley, and the University of North Carolina at Chapel Hill. Twice nominated for the best paper in the Journal of Finance (1998 and 2000); won the Best Paper Award in Emerging Markets by the Northern Finance Association; won the Best Paper with the Most Investment Value by the Western Finance Association Award; won the third prize for the best paper at the 2004 China Finance International Annual Conference; in 2011, won the 2011 "Spängler IQAM" Best Paper Award for Excellence from "Financial Review", one of the world's top financial academic journals; selected in 2016 The 2016 Most Cited Chinese Researchers list released by the world-famous publishing group Elsevier; serves as a member of the editorial board of Annals of Economics and Finance and a member of the International Financial Review and China Financial ReEditor-in-Chief of view.

Dr. Liang Wei: Digital economy expert, co-founding partner of Blockchain Thinkers 40 Forum (BT40), director of China Telecom Group Blockchain and Digital Economy Joint Laboratory, Computer Society of China District Blockchain professional committee member, co-leader of the Telecommunications Working Group of the Trusted Blockchain Alliance, consultant to the Asian Blockchain Society, editor of blockchain-related projects of the International Telecommunications Union (ITU), with more than ten years of experience in emerging ICT (cloud computing/big Research, development and management experience in data/artificial intelligence/blockchain) fields and communication network fields. He has presided over more than 10 major national and corporate projects, published a total of 24 academic papers, authorized 12 invention patents, 1 US patent, 6 leading international standards, 3 software copyrights, and published 3 monographs. "Blockchain in a Simple Way: Core Technology and Project Analysis", with a preface by a blockchain instructor from the Political Bureau of the Central Committee of the Communist Party of China, is the first blockchain monograph in the communications industry.

Tan Lin: Chief Ecological Officer of Beijing Big Data Research Institute, founder of MA Club, former CEO of Microsoft Accelerator (Beijing), and former researcher of Peking University Smart City Research Center.

Professor Xiong Yu, Chair Professor of the Business School of the University of Surrey, UK, Doctoral Supervisor, Academician of the Institute of Sustainable Leadership (CISL Fellow) of the University of Cambridge, UK, Adjunct Professor of the School of Computer Science, University of York, UK, Royal Registered engineer, member of the All-China Youth Federation, vice president of the Chongqing European and American Alumni Association, member of the Standing Committee of the Chongqing Youth Federation, concurrently serving as co-director of the Northeast UK Innovation Monitoring Agency (a British government intermediary agency that promotes innovative development in the Northeast of the UK), UK-China Entrepreneurship Development Executive Chairman of the Association, initiator of the 21st Century Sino-British Entrepreneurship Plan Competition, President of the British International Innovation Center, member of the Expert Committee of the British Parliament’s Cross-Party Blockchain Group, Co-Chairman/Chairman of the Management Committee of UKEX, a London-based blockchain financial company.

Mr. Wang Donglin, cloud computing infrastructure/blockchain infrastructure technology leader, well-known entrepreneur, China's top ten young scientists, China's top ten outstanding youths in the software industry, the first China Outstanding Engineer, OASIS International Industry Chairman of the technical committee of the standards organization UOML-X, China's outstanding private technology entrepreneur, and one of the top ten leading entrepreneurs in China's software industry. He has successively founded Shusheng Electronics (invented electronic seals), Shusheng Cloud (cloud computing technology leader), and YottaChain (storage public chain market). Ranking first in terms of share), Ystar (a wallet that users don’t feel comfortable using)

Di Qianfang, Director of Beijing Lianghua Cloud Network Intelligent Technology Center, Deputy Director of China Industrial Development Center of Tsinghua University School of Economics and Management, Deputy Secretary-General of China Mobile Communications Federation Blockchain Special Committee, former Industry and Information Economic Analyst at the Information Center of the Ministry of Chemical Industry.

1. Professor Wang Zhongmin, former Vice Chairman of the National Council for Social Security Fund, member of the 18th Central Commission for Discipline Inspection

2. Professor Chen Xiaohua, China Mobile Communications Federation Director and Chief Digital Economist of the Blockchain Professional Committee, Secretary-General of the Digital Economy Development Research Group of the China Science and Technology System Reform Research Association, and Director of the Financial Technology Research Institute of the National University Science and Technology Park of Beijing University of Posts and Telecommunications.

3. Professor Cao Huining, professor of finance at Cheung Kong Graduate School of Business, academic director of the Finance MBA, member of the American Finance Association, and has taught at the University of California, Berkeley, and the University of North Carolina at Chapel Hill.

4. Dr. Liang Wei, co-founding partner of Blockchain Thinkers Forum 40 (BT40), director of China Telecom Group Blockchain and Digital Economy Joint Laboratory.

5. Zhang Lu, Secretary-General of the Blockchain Committee of Chongqing Internet of Things Association, Head of China Telecom Group Blockchain and Digital Economy Joint Laboratory (Chongqing).

6. Tan Lin, chief ecological officer of Beijing Big Data Research Institute, founder of MA Club, former CEO of Microsoft Accelerator (Beijing), former researcher of Peking University Smart City Research Center

7. Mr. Wang Donglin, cloud computing infrastructure/blockchain infrastructure technology leader, well-known entrepreneur, China's top ten young scientists, China's top ten outstanding youths in the software industry, the first China Outstanding Engineer, OASIS International Industrial Standards Organization UOML-X Technology Chairman of the committee, China's outstanding private technology entrepreneur, one of the top ten leading entrepreneurs in China's software industry, has successively founded Shusheng Electronics (invented electronic seals), Shusheng Cloud (cloud computing technology leader), and YottaChain (temporarily ranks first in the storage public chain market share) , Ystar (a wallet that users can use without any sense)

8. Di Qianfang, director of Beijing Lianghua Cloud Network Intelligent Technology Center, deputy director of China Industrial Development Center, School of Economics and Management, Tsinghua University, China Mobile Communications Deputy Secretary-General of the Federation’s Blockchain Special Committee

9. Professor Xiong Yu, Chair Professor of the Business School of the University of Surrey, UK, PhD Supervisor, Academician of the Institute of Sustainability Leadership (CISL) of the University of Cambridge, UK Fellow), adjunct professor at the School of Computer Science, University of York, UK, Royal Registered Engineer, member of the All-China Youth Federation, Chongqing European and American FellowVice President of the Society, member of the Standing Committee of the Chongqing Youth Federation, concurrently co-director of the Northeast UK Innovation Monitoring Agency (a British government intermediary agency that promotes innovative development in the Northeast of the UK), executive chairman of the UK China Entrepreneurship Development Association, founder of the 21st Century Sino-British Entrepreneurship Plan Competition People, President of the British International Innovation Center, member of the British Parliament’s cross-party blockchain group expert committee

10. Professor Xie Jinlong, executive deputy director & secretary-general of the Blockchain Professional Committee of the China Association for Trade in Services, Chongqing Normal University Visiting professor at the University's School of Foreign Business

11. Wang Zishang: Vice President of Hainan Blockchain Association, founding CEO of Shangfang Shares (835872), has been operating Shangfang for 18 years, "Chain Organization" and "Cloud" Management" author, founder of TokenSky Chain Alliance, director of China Artificial Intelligence Industry Development Alliance

12. Chen Lei, member of Blockchain Thinkers Forum 40 (BT40), founder of Bit Blue Whale, Peking University Secretary General of the Blockchain Club, Standing Member of the Blockchain Special Committee of China Communications Industry Association, Member of the Blockchain Special Committee of China Mobile Communications Association, Distinguished Expert of Beijing Urban Big Data Research Institute, Director of China Blockchain Supercomputing Industry Alliance

13. Lu Xinzhi, senior business observer, founder of Financial Technology New Knowledge Media Matrix

14. Researcher Sun Zhiguo, Institute of Agricultural Information, Chinese Academy of Agricultural Sciences

15. Lu Yan, deputy secretary-general of the China Mobile Communications Association Blockchain Professional Committee

16. Jiang Hong, executive secretary-general of the China Blockchain Research Alliance

17 , Yu Xiaokun, State Grid Blockchain Laboratory, State Grid 2020 Blockchain Chief Architect

18. Zhang Liang, Lenovo Group Chief Solution Architect

19. Tian Yong, Technical Director of Guizhou Electronic Certificate Co., Ltd.

20. Dr. Li Qianqian, China Agricultural University

21. Dr. Cao Hao, Associate Professor of Anhui University of Science and Technology (password PhD)

22. Li Mingyang, head of digital economy channel of China Enterprise News

Mr. Guo:

tel: +86-10-82051290

cell: +86-13301289389

WeChat: CheeyeTHU

Tok: 75A7B3

Instructions about Tok: < br />
1. User registration does not require a mobile phone number or email address, only a username and a set password. The system generates a 76-bit HASH value (consisting of 16 values ​​​​from 0 to 9 and A to F) based on this user name. This HASH value is the user's ID.

2. The system has no central server and is a point-to-point encrypted communication based on blockchain technology. No one knows the content of the conversation except the people participating in the conversation.

3. Warm reminder: Remember your username and password. There is no password reset problem in TOK because there is no central server. No one knows your password except yourself, and TOK also No exception.

6. Popular explanation of blockchain technology

Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Blockchain is an important concept of Bitcoin, which is essentially a decentralized database. At the same time, as the underlying technology of Bitcoin, it is a series of data blocks generated by cryptographic technology. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information (anti-counterfeiting) and generate the next data block.
First of all, it is a special distributed database that is essentially readable and writable. The unit then entered into the database is a "block", which is decentralized.
It doesn’t seem to be easy to understand when explained in this way, so let’s give a simple example.

When we shop on Taobao, because neither the buyer nor the seller knows each other's credit, we need to introduce a third-party platform - Alipay. Alipay is a trustworthy platform. The buyer first gives money to Alipay. After the seller delivers the goods, the buyer receives the money and notifies Alipay, who then lends the money to the seller. In this way, there is no need to worry about credit issues in the transaction.

7. Internet celebrity teacher Li Yongle talks about the principles of Bitcoin and blockchain, which is simple and easy to understand

Now that retail investors can no longer enter, bookmakers may use supercomputer mining. .

The technical principles of Bitcoin are not just used for this. In fact, they are similar to many survival wisdoms.

For example, why is Bitcoin not afraid of counterfeiting? Because Bitcoin counterfeiting requires one person to challenge the world. The problem is that if a person has so many mining machines, why should he violate the rules? In the rules, he You can get more benefits. . .

Everyone will follow the trend of longer blockchains, so if you don’t join this team, you will end up challenging the world alone. . .

The Dutch played with tulips, fried rubber in the late Qing Dynasty, and fried orchids in the last century. It’s all the same routine. Whoever takes over in the end is finished. Everyone is now betting on where the limit is and whether they can get there before it. Cash out. . .

(This teacher Li Yongle is considered the tyrant among middle school teachers.Lord, first prize in the National High School Mathematical Olympiad, provincial champion in the High School Mathematical Olympiad, double degree from Peking University, master's degree from Tsinghua University, champion of the Beijing University Student Speech Contest, currently working as a physics teacher at the High School Affiliated to Beijing Renmin University, and independent producer of Xigua Video. This resume is so beautiful. Now, this Internet celebrity teacher has released hundreds of videos on Xigua. A small part of them are high school physics and mathematics courses, and most of them are all-encompassing science popularization like the Science Squirrel Club. The characteristic of this teacher is that he has clear logic and can explain complex things. The questions are explained in a simple and clear way. One class lasts for fifteen minutes and fills two blackboards. It can be seen that the class has been well prepared and the words are humorous. They are as far away as Tang Degang and as close as the bright moon back then. They are all in this style. To be honest, I collected it first. )

In 2016, Lang Xianping, Shi Hanbing, host, three people discussed Bitcoin

Worth watching

The former BTCC CEO Li Qiyuan and Lang Xianping were at each other’s throats.

Professor Lang believes that the person or institution that has accumulated the most Bitcoins is actually Satoshi Nakamoto. As long as he proposes a plan, the whole world will foolishly help him to speculate and appreciate the value. However, because This kind of virtual currency is on the edge of the system, so Satoshi Nakamoto does not dare to reveal his true identity

Finally, the host cited the South Sea Bubble that caused Sir Isaac Newton to lose ten years of salary and leave the market with a loss. Newton once lamented: "I can accurately calculate the movement of celestial bodies, but I cannot predict the madness of human beings.

The best stories kill the most people... The reason why the South Sea Bubble deceived Newton was Because his story is really fascinating, very scientific, very realistic, and has its own way, just like Bitcoin now.

This is like rubber in the late Qing Dynasty, the rubber itself is naturally useful Industrial raw materials, but the price exceeds the value too much, it is still a bubble.

Which stock market crash in history was not a crazy bull market bubble...

But still every time There are speculators who take advantage of the fire, and at the same time, they don't forget to trick fools into taking over the market so that they can cash out. It's not that the speculators don't know that this is a bubble, they are speculating on whether they can take advantage of the fire and successfully cash out before the judgment day.

Let me just say a few points: 1. Those who drown in the water are all good at water. After all, those who know how to mine are not illiterate. Newton was also fooled by the South China Sea bubble, just like that famous joke , when you meet a bear, you don’t need to run faster than the bear, you just need to run faster than the person behind you.

2. Bitcoin proposed by Satoshi Nakamoto is just a type of virtual currency In addition, there are a large number of other blockchain virtual currencies with the same principle. Blockchain is indeed not a bubble, but the speculation of Bitcoin is that the price far exceeds the value, which is the so-called bubble. Blockchain is indeedIrreplaceable future trend, but Bitcoin is not. Bitcoin can be abandoned by the whole world at any time.

3 Satoshi Nakamoto’s Bitcoin system is completely based on a complex cryptographic algorithm. If this algorithm is cracked, or the speed of computers advances rapidly, such as quantum Computers, then the entire basis of Bitcoin's existence disappears, and there is no difference between it and the Zimbabwean currency.

4. Someone who is really optimistic about this thing would be so kind and publicize it to everyone, because he is afraid that there will be too few people competing with him to grab the mine? People who are really optimistic about it will only make a lot of money in silence, and even go around saying that Bitcoin is not good, so as to prevent others from snatching it from them. The only advantage of deceiving people into the industry is to deceive people into taking over the business. The speculators you mentioned do not doubt that Bitcoin is a bubble, but they know better that as long as they deceive fools into cashing out before the collapse, they can still make a fortune regardless of whether it is a bubble or not. It’s such a simple truth.

The above is the latest disappearing video of players in 2020

The so-called listening and understanding

In fact, what this thing has fallen into now is almost the same as most financial speculation. In the long run , short-term, bankers, and retail investors are all the same routine.