What is the password of the last SMS of China Postal Savings Bank?

SMS password is an authentication method of personal online banking, which is mainly used for online payment. Personal online banking customers are divided into five categories according to different authentication methods: online registered customers (online self-registration), short message customers (SMS password authentication method), electronic token customers (electronic token authentication method), ordinary UKey customers (ordinary UKey authentication method) and extended UKey customers (extended UKey authentication method). The latter four types of customers need to be handled at the counter.