But I don't recommend you to take the exam in Tianjin, because I'm a native of Tianjin, and I've also taken the exam. I think the difficulty of taking the exam in Tianjin and Beijing is almost the same, but the certificate of the former Central Hospital of China is different from that of Tianjin. In addition, it's more formal here, so it's better to test your level and practicality in the future. If the time is right, it's also in winter and summer vacations, and it's twice a year!