Why are you not allowed to pick at your plate, only what's in front of you?

This was often said before. That is, you eat food clip in front of you, will not affect the other people here to eat food, especially with soup dishes, in case the middle of the dish drops in other dishes, light is to affect the taste, heavy is unable to eat. Others will dislike it. For example, if you pick up a croquette and drop it halfway, it will fall right into the soup and the whole table will be full of soup. Just be careful now, as long as you make sure you can pick it up. It's not that strict,