It is precisely because the starting point of the benchmark date for calculating the index is different that there will be differences between the two indexes. \x0d\ Shanghai Composite Index (referred to as Shanghai Composite Index, Shanghai Composite Index, Shanghai Composite Index or Shanghai Composite Index) is a statistical index reflecting the overall trend of listed stocks in Shanghai Stock Exchange in China. The Shanghai Composite Index was originally compiled by Jing 'an Securities Business Department of China Industrial and Commercial Bank of China Shanghai Branch Trust and Investment Company according to the actual situation of Shanghai stock market and referring to the generation methods of foreign stock price indicators, and was released publicly on July 199 15. \x0d\ Shenzhen Composite Index is the stock price index compiled and published by Shenzhen Stock Exchange on April 3rd, 199 1. The index stipulates that April 3rd 199 1 is the base period, and the base period index is 100. The composite index is a weighted composite stock price index with all the stocks listed on Shenzhen Stock Exchange as the calculation range and circulation as the weight. Its basic calculation formula is: today's comprehensive index = (total market value of index stocks today/total market value of index stocks on base date × index on base date). Whenever a new stock is listed, it will be included in the calculation of constituent stocks from the next day, and then the denominator in the above formula will be adjusted with the following formula. \x0d\ "The total market value of constituent stocks on the base date = the total market value of constituent stocks on the original base date+the number of new shares issued × the closing price on the first day of listing.