Carry out imitative operations based on the arbitrage of 2000-2800 points in the stock market.
If investors are optimistic about the market outlook, they can buy index funds at a low of 2,000 points, such as Dividend Index ETF, SSE 50 ETF, CSI 300, etc.
If you are bearish on the market outlook, you can sell the above funds at a high of 2800 points, then cover from the low, and carry out a band operation of buying low and buying high.