1. Don't dance with chopsticks as props when you are eating. Or beat the food on the table with chopsticks and point at others with chopsticks. Every time you use chopsticks, put them down gently and try not to make any noise.

Try not to pick your teeth in public. Cover your mouth with your other hand when you have to pick it up. Don't watch or re-enter in public, and don't throw it around or spit it out casually. After picking your teeth, don't hold a toothpick for a long time, let alone use it to get food.

When choosing vegetables, don't look around, toss and turn, and pick and choose among popular dishes. It would be impolite if you clip it up and put it back. When dining at the same table, people should pay attention to mutual courtesy when taking food, walk in turn and take the right amount.

Don't shake your head when eating, don't take off your clothes, don't sweat, and don't make any noise. Not only is it impolite, but it will also spoil others' appetite. You can persuade others to use more, or try a dish, but don't take the initiative to help others with food.

5. The cup is mainly used to hold soft drinks such as water, soda, fruit juice and cola. Don't use it to hold wine, and don't turn the cup upside down. Besides, what you drink in your mouth can't be spit back into the cup.

Baidu encyclopedia-Chinese food etiquette