Set up a target investment plan.
There is a subscription transaction amount in the fund account but the funds are not used because the target investment plan is set.
If you set a target investment plan, you will be prompted to sell when the target is reached. Its characteristic is to set a profit target when buying. When the fund reaches the target, the system will automatically prompt whether to sell.
In addition, there are funds similar to Bank of Communications' regular double-interest balanced mix, which will redeem a fixed portion of shares at the beginning of each month.