1. The limit of fund subscription and redemption is 3pm on the trading day. Investors can sell at the end of the trading day. At the end of the trading day, they can probably know the ups and downs of the fund, and generally sell when the net value of the fund rises.

2. Charge redemption fee when redeeming the fund. Generally, the longer the holding time, the lower the redemption fee. Investors are advised to hold it for a long time and then sell it.

3. The fund is sold at a high level. Generally speaking, when the fund is at a high level, investors take more risks. Investors are advised to sell at a high point and buy at a low point.