Take Tian Tian Fund Network as an example. Tian Tian Fund Network is the first approved institution in China. As an independent online sales channel, it cooperates with fund companies to directly sell fund products on its own platform, and provides comprehensive financial assistance services including fund data statistics, investment tool analysis and information interaction, which provides convenience for investors. To purchase funds through Tian Tian Fund Network, you must first register as a member and complete the risk tolerance rating after associating with the bank card, and then you can complete the fund purchase on the platform. Before 15 o'clock every day, investors can also cancel the subscription of that day. In this mode, the fund sales website is the agent of financial institutions, which acts as an intermediary between investors and financial institutions, and does not act as the main body of fund transactions.