Alipay's fixed investment method is called "target investment", which means setting the rate of return in advance. When the fund you decide to invest in reaches the set rate of return, Alipay will automatically sell the fund to help you make a profit, then make a fixed investment and sell it when you reach the target next time.
Of course, you can even end the fixed investment after selling. In fact, it is an intelligent fixed investment method, which automatically helps investors make profits.