Fixed investment is to invest on time and in quantity every month, and automatically deduct the money according to the set deduction date. If there is not enough cash or balance in the account, the deduction will not succeed. When you make up cash in the current month, the system will remind you whether to make up the deduction, and you can choose it yourself. If you don't make up the deduction, you will continue to deduct it next month, but the fixed investment will be interrupted for one month.