Only buy funds that passively track the market, such as SSE 50 index fund 50ETF code 5 10050, SSE 180 index fund 180ETF code 5 10 180.

The market index generally refers to Shanghai's "Shanghai Composite Index" and Shenzhen's "Shenzhen Stock Exchange Index". It can scientifically reflect the whole stock market, such as the overall rise and fall of stocks or the trend of stock prices. If the market index rises gradually, it can be judged that most stocks are rising. On the contrary, if the index falls gradually, most stocks are falling.