2. The Shanghai Composite Index is referred to as the "Shanghai Composite Index", and its sample stocks are all listed stocks, including A shares and B shares, reflecting the changes in the prices of listed stocks on the Shanghai Stock Exchange. It was officially released on July 199 15.

3. Shenzhen Stock Exchange refers to the stock price index compiled by Shenzhen Stock Exchange. The calculation method of this stock index is basically the same as that of the Shanghai Stock Exchange. Its sample is all the stocks listed on Shenzhen Stock Exchange, and the weight is the total share capital of the stocks. As all listed companies are taken as samples, its representativeness is very extensive, and it is released simultaneously with Shenzhen Stock Exchange, which is a necessary reference for investors and securities practitioners to judge the trend of stock price changes in Shenzhen Stock Exchange.

4. There are several types of open-end funds: currency type, bond type, capital preservation type and stock type. There is no redemption fee for the money fund, and the income is equivalent to six months to one year's deposits, which can be redeemed at any time without loss.

The subscription and redemption costs of bond funds are relatively low, and the income is generally greater than that of money funds, but there is also a risk of loss, and the loss will not be great.

Stock funds have the highest subscription and redemption costs, and the fund assets are stocks. When the stock market falls, the fund will have the risk of losing money, but when the stock market rises, there will be gains.