You should be talking about the public canteens in schools or factories. It is ok to bring your own tableware. But don't worry too much. The tableware in the canteen is sterilized. Lots of tableware. There are disinfection tools in the dining hall, and some of them have been heated. In fact, the sanitation of public canteens is cleaner than that of minority people. Because many people are afraid of infectious diseases, you can rest assured. The small restaurants on the street must be much cleaner. You can ask your aunt who washes dishes and brushes chopsticks in a small restaurant. Many of them are really not as clean as public canteens. I hope I can help you.