My girlfriend is going to work in a hotel. Should I agree?

Wow, in what age, the idea is still so stupid. Do you know how many business owners have studied hotel management now? If you learn, you don't practice, and you're not stupid. If you don't know how to think, you won't have a high level of thinking. Even if you let her go in the future, there will still be problems. This is a psychological problem. I suggest you see a psychiatrist, or you will break up for work sooner or later.