The sunset principle is Wal-Mart's standard principle, which means that today's work must be completed before sunset today, and the customer's service requirements will be met on the same day, so that the day will not be delayed, no matter whether the requirements are ordinary customers from small towns or rich people from busy business districts.

The sunset principle stems from the famous saying of sam walton, the founder of the company: "If you can finish your work today, why put it off until tomorrow?" Nowadays, the sunset principle has become an important part of Wal-Mart's corporate culture, and it is also an important reason why Wal-Mart is highly appreciated in customer service.

The core of the sunset principle is instant service, which conforms to the belief of respecting individuals, paying attention to customer service and pursuing perfection. Wal-Mart believes that their customers live in an increasingly busy world, and everyone is busy for their own livelihood. The sunset principle can reflect the business purpose of Wal-Mart.