Excuse me, what does it mean that my postal currency card is 5 yuan faster for no reason?

Fast money is a fast payment transaction handled by China Postal Savings Bank. For example, you can pay for a product from 50 yuan by express delivery. Just like Alipay Express Payment.

Extended data:

China Postal Savings Bank (PSBC) was formally established on March 20th, 2007. It is the fifth largest bank in China and a state-owned commercial bank established on the basis of the reform of postal savings management system. China Postal Savings Bank inherited the postal finance business operated by the former State Post Bureau and China Post Group Corporation and the assets and liabilities arising therefrom, and continued to engage in the business approved by the original business scope and business license documents.

References:

Baidu Encyclopedia-China Postal Savings Bank