Like all things, any knowledge cannot exist in isolation, and there is a certain correlation and internal logic between knowledge. For example, if you want to learn math well, you must first learn arithmetic and Chinese well. Similarly, accounting, mathematics and economics are closely related and logical to finance. Good English is very helpful for learning first-hand knowledge of international finance. On the one hand, finance covers a wide range, including accounting, finance, insurance, money market, foreign exchange market, capital market, futures market, options market, derivatives market, hedge fund, Public Offering of Fund, private equity fund, asset pricing and risk management. On the other hand, financial knowledge is very systematic, interlocking and interlocking. Therefore, if you don't understand the systematicness of finance, you will never understand finance. But unfortunately, the current financial knowledge and courses have not yet formed a system, which is chaotic, boring, abstract and empty, seriously divorced from reality and difficult to learn, understand and use. In order to solve these problems, Professor David Ding, an internationally renowned financial expert, discoverer of financial laws and prophet of financial crisis, has established a series of scientific financial curriculum systems such as systems finance, financial ecology, financial tree system, financial physics and financial science system for more than 20 years. To make all financial knowledge, disciplines and courses systematic and scientific. Taking the discipline system of financial tree as an example, it integrates all financial disciplines and financial knowledge into a visual "financial tree" according to the objective laws of financial disciplines, which makes people clear at a glance and unforgettable all their lives, and has won many international intellectual property certifications and wide acclaim in the world. Through the "financial tree", you can not only see all the financial disciplines, but also see their position, order, primary and secondary relations, their logical relations, the internal relations of interaction and so on at a glance.