Quantitative Analysis is a book published by Guangdong Economic Publishing House on 200 1. The writer is Yang Jihong. Generally speaking, the prices mentioned in this book refer to the weighted stock index of Taiwan Stock Exchange, or SIMEX, and the futures index of Taiwan Province stock, various classified stock indexes, and even China, Shanghai, Shenzhen, Hong Kong, the United States, Tokyo and other indexes. Of course, for individual stocks, but for the convenience of analysis and reference value, both the whole and individual stocks are based on the closing price. As for the quantity mentioned in this book, generally speaking, it refers to its total turnover, and in the case of individual stocks, it refers to the total turnover of the stock on that day. In the futures market, it refers to its total number of points.