The triple fixed investment of the fund is a regular fixed investment of three times the amount. Fixed investment is to invest in a specific fund at a fixed time and a fixed amount, so 3 times fixed investment is to invest 3 times the amount at a fixed time. The normative definition of fixed-term investment is a fund investment mode in which an investor applies through a designated fund sales organization, agrees in advance on the deduction date, deduction amount, deduction method and the name of the invested fund, and the sales organization automatically completes the deduction and subscription in the bank account designated by the investor on the agreed deduction date.