What should I do if I take an examination of a teacher and enter a field I don't like?

First, try it first. Maybe you will get used to this place and like it after staying for a while. Because it is not so easy to give up after being admitted, in fact, it can be said that it has wasted so long preparation before, which is a pity. Every place has its own advantages and disadvantages. Stay there for a while and actively seek its beauty. You'll find that it's not that annoying.

Second, after contacting the people there for a period of time, you will find some people's friendship, students' sincerity and beauty, and strong thirst for knowledge, which are precious true feelings. After staying for a period of time, I will like such a place that I didn't like originally, because I can't give up that feeling. This is everyone's charm.

Third, if you really can't overcome your psychological barriers, just give up. While you are still young, there are still many choices, and it is a big deal to start over. When you do what you like when you are young, life should be happy, so that you can live more meaningfully.