When the market is relatively poor, investors had better clear their positions. If the market is relatively good, then investors can keep the bottom position, which can prevent them from stepping out. If the fund continues to rise, it can still maintain the bottom position and get higher returns. If the fund subsequently falls, then the position is not heavy and can be sold in time.

Fund positions are determined by investors themselves. When the market is good, they can operate in Man Cang; when the market is normal, they can operate in a semi-warehouse; when the market is bad, they can open a short position.