Investors may be required to fill in the recommender and fund marketing code when purchasing funds in banks, mobile banking or brokerage apps. The fund recommender can get a part of the commission of the fund handling fee.

Fund (referred to as fund for short) refers to a collective investment method in which many investors' funds are pooled to form independent property by selling fund shares, which is managed by fund custodians (such as banks) and fund managers, and the benefits and risks of securities investment are shared by portfolio.