This won't work, unless some private gyms will accept it, but general or larger fitness clubs need certificates. After all, if members have an accident during training, the first thing to do is to check whether they have a professional qualification certificate. If they don't do this, they may bear criminal responsibility. So I suggest that if you want to be a personal trainer, you'd better study systematically and get a better professional certificate. I heard that Dongyi is not bad, and I can take the national professional fitness instructor certificate. You can consult!