1. Discount: In order to encourage customers to pay in cash, supermarkets will discount the price of goods paid in cash to a certain extent.

2. Give small gifts: Supermarkets will give small gifts to customers who pay in cash, such as shopping bags and snacks.

3. Points: The supermarket will open a membership card for members who pay in cash to accumulate points, and then spend again to exchange the corresponding benefits.

4. Extra services: For customers who pay in cash, the supermarket will provide extra services, such as free purchase and home delivery.