What happened when my hometown Postal Savings Bank called and said that I could take milk?

1. Do activities: Banks may cooperate with local dairy enterprises to launch preferential activities for customers to collect milk through banking channels. This is a strategy for banks to attract customers and improve their popularity.

2. Promotion: The bank may be conducting some market research or promotion activities, contacting potential customers by delivering milk to understand their needs and feedback, so as to better adjust and improve products and services.