What is the slogan for the opening of the school canteen?

1. A grain of rice, a drop of sweat, a grain of grain and a drop of sweat.

2. A porridge or a meal should be thought of as hard-won, and half a thread of constant thought is hard to come by.

3. Smoking is strictly prohibited - smoking is harmful to health.

4. Be humble to each other and be as close as a family.

5. Be polite and orderly.

6. A porridge or a meal should be thought of as hard-won, and a ray of constant thought is difficult to obtain.

7. Develop in an all-round way and improve quality.

8. Good hygiene habits are the guarantee of good health.

9. The heart of heaven and earth is "food", and precious food should not be eaten away

10. Saving is beauty, waste is ugly.

11. The food in the canteen is delicious, so be courteous when buying food