Buy the fund at a low level, and then sell it when the net value of the fund is higher than the buying position, earning a certain price difference, or in a falling market, investors can increase the share of the fund by constantly investing, thus sharing the cost, and then form a "smile curve" when the market rises, and finally make a profit and quit.

At the same time, when buying, investors should reasonably control their positions, set stop-loss positions, control the risks of funds and prevent more losses.