1. Subscription refers to the purchase of fund shares from fund companies during the duration of the fund. Subscription corresponds to subscription, that is, buying fund shares from fund companies during the raising period.

2. Fixed investment means regular investment, and you buy a little every once in a while. Fixed investment is based on "U" curve. Even if the market falls after buying, the holding cost will be continuously diluted after the market falls and long-term bottom investment. When the market improves and returns to the initial opening price, you can get a certain profit.