To be exact, money was not invented by anyone, but the product of social evolution. In early days, people lived in groups. Some people can hunt, others can fish, but at that time there was no concept of money. Bartering is very popular. Hunters exchange prey for necessities such as grain and salt, and farmers exchange crops for meat. There are many latecomers, so it is necessary to formulate an exchange standard. Everyone uses the most common and needed staple food, such as rice and wheat, as the exchange standard. People change things into rice and then rice into other things, and the concept of "money" begins to appear. However, because grain is too big to be stored for a long time, the most popular, durable and rare things replace grain to play the role of money. With the development of human civilization, hides, rocks and shells have all been used as money, but in the end, gold, silver, copper and other metal substances are the most widely used. Handed down, it became the later coin. So the function of money is that it symbolizes a kind of value and can replace the real thing. On the premise that everyone trusts this value, money has the function of currency circulation. John law is the inventor of paper money, the father of stock and lottery, a mathematician and monetary theorist, and also a playboy and gambler. He created the Mississippi bubble and destroyed France. But today's financial world is still based on john law's system. As early as the end of17th century, john law realized the necessity of eliminating gold and silver as currency reserves in reused paper money, and the US government (and other countries in the world) did not announce its farewell to the gold standard currency system until 197 1. A large number of derivative products, such as futures trading or warrants, have long been invented and popularized by john law. The Great Gambling is such a novel about the origin of today's financial system, a wonderful story of money, power and love intertwined. In the big game, besides the protagonist john law, other characters are also radiant: Defoe, such as Montesquieu. 167 1. john law was born in Edinburgh, Scotland. When he was young, he was addicted to fireworks and Liuxiang. After a gambling, he lost all his father's inheritance and had to go to London to seek development. Emperor Wu of the Han Dynasty made leather coins with white deerskin, which was also a temporary response in desperation. Although leather coins have not existed for a long time, they have created a precedent for large denomination banknotes in China and become an excessive product of coins and banknotes. Huizi in the Northern Song Dynasty and Jiaozi in the Southern Song Dynasty were both improved on the basis of Pibi. Emperor Wu of the Han Dynasty invented Pibi, so he should be the inventor of paper money in the history of China.