This is the national fitness instructor's professional qualification certificate, referred to as the national professional certificate. Do you want to take an exam in Chongqing? I took the exam in Chongqing, the fourth floor of Daping Great Wall Hotel in Yuzhong District. You can ask, I forget their names. It's a gym, and now it's a test center for national jobs. There seem to be only three test sites in Chongqing. They have a national post exam every month. Generally speaking, they concentrate on training for seven days before the exam, and then take the exam, physical fitness test, practical test and theoretical test on the eighth day. Anyway, if you take the exam, you can finish it in one day. Get a certificate after passing 60 points in theory and practice.