First of all, it is a common and reasonable behavior for girls to occupy seats in the library. When studying or reading in the library, many people will occupy a place so that they can concentrate on their study or reading. This is actually a kind of planning and utilization of one's own time, and also a kind of respect for others' time.

However, if the seat occupied by girls is not marked and personal belongings are not placed for occupation, then this position is a public resource and anyone has the right to use it. If a boy needs this position, he can also occupy it reasonably, which is also a kind of planning and utilization of his time.

If boys want to occupy the position of girls, first of all, they should politely ask whether girls will leave temporarily, or discuss with girls to take up time to avoid unnecessary conflicts and misunderstandings. If a boy directly hits a girl in the face, it is very impolite and disrespectful, which will bring harm and unpleasant experience to the girl.

So I think girls occupy seats in the library and are hit in the face by boys. They should respect other people's time and space and avoid unnecessary conflicts and misunderstandings. Of course, if boys' behavior seriously violates public order, good customs and moral norms, girls can also safeguard their rights and dignity in appropriate ways. In any case, we should respect the rights and dignity of others and maintain a civilized and harmonious social environment.