What are the general types of canteen slogans?

It’s no different from a place, right?

At most, the protection is strong and so on.

Usually it’s about frugality: who knows how hard it is to make every meal on the plate. Or save every drop of water and cherish every grain of food.

And those who pay attention to hygiene: diseases come from the mouth, wash hands before eating.

Or pay attention to dining order: keep quiet, wait in line for dining, and don’t make any noise.