According to the folk saying, three courses are served during the sacrifice, so the three courses are obviously not for people to eat, so you can't serve three courses in the form of hospitality. In some areas, three courses are served only for nothing, and it is obviously disrespectful to serve three courses at ordinary times.

Don't put three plates on the table.

This sentence is easy to understand. When guests come home, they should have good wine and food. No matter how many people come, even if only one person comes, don't put three dishes. A little superstitious about three ghosts and four gods, three dishes worship God and four dishes worship ghosts, which means nothing. Some elderly people in rural areas are more taboo about these statements, and they must not entertain guests with three dishes. Even if you bring a dish of pickles to make up the number, you should avoid three dishes.

There are not enough chopsticks.

There is an idiom called "three long and two short", which adds up to just five. Some family chopsticks have been used for more than ten years, and it is normal for them to have different lengths. First of all, they should be consistent and different in height, which is impolite. Secondly, they should be neat and not put into various shapes. There are dirty things on chopsticks, some are drenched with tea, and some are stuck with vegetables. No matter where they are placed, they are a sign of disrespect to the guests. You should know that the elderly pay great attention to details and avoid putting chopsticks in Shuang Yi. If there are only five people, you should add an extra pair to express your meaning.