If there are students in the dormitory, it is not illegal. It is illegal for the guide to open the door and enter the dormitory when no one is around. The guide has the responsibility to look for prohibited items, small household appliances or other things in the dormitory. When staying at school, the tour guide must be responsible for everyone's safety. Many students will never hand it in, so they have to find it themselves, which is also a helpless move. Because in the event of an accident, it is these students who are in danger.