I don't think I need a certificate. What I need is how to find a gym and reach an agreement with it. Personally, it's easier to try training for one month for free, and then talk with the gym in depth when the customers are effective and interested.
I wonder if my answer is of any use to you. I come from wen county, Henan. Please send me a message.
After reading your information, you got a lot of points. You are a little rich woman. How can you give 5 points? Add more. Don't be too stingy!