How does Sichuan Tianfu Health Link log in with a secondary card?

Two mobile phone numbers are bound to a Tianfu health link. It is feasible to use one Tianfu Tong account for two mobile phones, but you need to re-enter the account password every time you switch to log in.

Tianfutong is a comprehensive municipal transportation platform built by Chengdu Tianfutong Financial Services Co., Ltd., which undertakes all the services of the former Chengdu Tongka Co., Ltd., and undertakes the development, construction, operation and management of multi-application platform for financial IC cards, city one-card construction and public payment management service platform.