In ancient times, people were superstitious and thought that three was an unlucky number, mainly because the homonym "three" would mean farewell dinner. China people are close friends and family. If there are only three dishes on the table, it means that the host doesn't want to entertain everyone, and a meal will offend people.

Moreover, in ancient times, the occasion of placing three discs was usually a sacrifice, which means that these three discs were dedicated to the dead or to the gods who worshipped them. Then you can't serve three courses when you are entertaining friends and relatives, otherwise it will make people who eat have bad emotions.

Taboos of catering etiquette:

1, chopsticks and bowls should not collide as much as possible.

Try to avoid the sound of chopsticks colliding with the bowl when eating, and it is forbidden to knock on the bowl with chopsticks intentionally when eating. This is very impolite behavior, and it is also forbidden in public.

Don't make any noise when eating.

Some people like to make noise when eating, which is called "bickering" in Sichuan dialect. "bickering" is a very indecent behavior in table manners, and it is also detrimental to personal image.

3. Avoid picky eaters when eating.

When eating, don't pick and choose on the plate and toss the food over and over. This is disrespectful to others, and others will feel uneducated.