There is a China Airlines in Shenzhen. Hmm. . . If you just want to make money, I don't think it's easy. Unless your own conditions are excellent.

Oh, the coach sells two. In fact, coaches also need to sell. Hmm. How interesting

If you really love fitness, go and experience it. If you are young enough, you can try more. The industry is still good. More people will have spare money to participate in fitness.

If you are a coach, go to the corresponding national qualification certification first.

I wish you happiness!