According to your future direction, if you focus on personal trainer, you can choose NASM (National Sports Medicine Association) personal trainer certification. At present, only Shanghai has training exams.
If you focus on physical training, you can choose NSCA (American Physical Fitness Association). Training in Chengdu may be cancelled this year, but there are still some in Beijing and Guangzhou.
If you focus on clinical sports medicine, you can choose ACSM (American Sports Medicine Association).
There is also ACE (American Sports Committee), which pays more attention to fitness education. International sports science association