If the investor is a novice investor or the investment level is not good, then it is better to choose a fixed investment fund. If investors trade for a long time and the investment level is relatively high, it is best to choose long-term holding.

Fixed investment is to buy funds at a fixed time and amount. Fixed investment does not need to be timed, and the investment level of investors is not high. Long-term holding means that investors have been holding funds from the beginning of buying, which requires investors to choose the right time, and investors should increase or decrease their positions according to market conditions or investors' profits and losses.