1. A bank fund is a fund company that publicly raises a small amount of funds to the public, then invests with the raised funds, earns handling fees, and returns the profits to everyone.

2. Funds are divided into closed type and open type according to trading methods. Closed means that transactions can only be made within a certain period of time, and open means that transactions can be made at any time. Generally speaking, everyone invests in open-end funds.