Stock index futures can be long or short, basically short-term or ultra-short-term because of high risk. If you hold a long position for more than two days, you need to have enough margin and good judgment on the market.

Fundamental and technical aspects cannot be ignored. After all, it is a stock index and a tracking index, which has the attributes of stocks, especially the index of A shares, and has a strong policy orientation. Every position can't be overweight, so you must bring a stop loss when you enter the market and strictly control the risk.