1. online banking: you can log in to online banking during the trading hours of the securities trading day, find the options of funds, securities and futures, click on bank securities, and finally click on self-registration. Open the third-party depository service according to the steps prompted by the system.

2. Mobile banking: Investors can also use mobile phones to open third-party custody services, log in to mobile banking, find securities options, click account opening service, and finally click the self-registration function.