The handling fee for purchasing index funds is lower, depending on which platform you bought it on, compared with the actual situation. General purchase channels include Tian Tian Fund, Alipay, major banks and stock exchanges. Many people choose Tian Tian Fund and Alipay. Download the Tian Tian Fund APP as shown in the figure.

Downloaded in-app interface

After downloading, you can search for the desired fund code in the search bar to purchase or vote. Attached below are pictures purchased by Alipay.

Click Financial Management, as shown.

Then click on the search bar to find the fund code of your choice and you can buy it.