1. Buy at one time. When buying a fund at one time, investors can look for buying opportunities by combining the historical performance of the fund manager and the trend of the fund's subject matter, that is, choose a fund with good historical performance of the fund manager and the fund's subject matter is in an upward trend to buy, and set a stop-loss position after buying to prevent risks.

2. Fixed investment. Fixed investment in the fund refers to investing in the designated open-end fund at a fixed time and with a fixed amount. By increasing the holding share through constant fixed investment, the cost of holding positions can be shared equally, the risk of the fund can be dispersed, and the effect of a smile curve can be achieved. When investors make fixed investment in the fund, they choose the fund with greater volatility and in a downward channel for fixed investment operation.