What should I tell mom? I want to go out for a change.

Did you talk well with them? In my family concept, everyone is equal. If you have something to say, you should pay attention to the way. You should find a night, gather your family and then say what you think. If you want to travel, just say, "Mom and Dad, I want to visit Yunnan. I've never been out of town, so I want to go by myself "or you want to do business outside by yourself. You can also say, "Mom and Dad, I am grown up now, and I want to experience life by myself. Staying at home for too long is really annoying. Although my family conditions are ok, I have no social experience. If you can't help me in the future, I will lose my way and can't stay with you all the time, right? I know you are worried about me. In this case, parents will definitely consider it. Try it. Be brave. We welcome you to Yunnan.