I, Dr. xxx from the Prince of Wales Hospital, the Chinese University of Hong Kong, now serve as professor and director of the Department of Orthopaedics, Faculty of Medicine of the Chinese University of Hong Kong, director of Department of Sports Traumatology of the Prince of Wales Hospital in Hong Kong, dean of the Hong Kong College of Orthopaedic Surgeons and president of the Asian Federation of Sports Medicine. Great. Professor and director: if you are the only professor, do leave out the indefinite article. If you are one of a few, please put in the indefinite article. I am still debating about THE Chinese University of Hong Kong. You already have THE before Prince of Wales, which is essential. Normally we would just say University of Hong Kong after THE Prince of Wales Hospital. However, because you have Chinese as a distinctive (adjective), I think you have to leave it in. Is there an English University of Hong Kong? Someone else confirm?

overall the articles are being used correctly.

I Dr. XXX from Prince of Whales hospital, the Chinese University of Hong Kong(this part does not make sense. Is he from the prince of whales hospital or the Chinese University of Hong Kong), now serve as a professor and director of the department of Orthopaedics, Faculty of Medicine of the Chinese University of Hong Kong, director of the department of Sports Traumotology in Prince of Wales Hospital in Hong Kong, dean of the Hong Kong College of Orthopaedic Surgeons, and president of the Asian Federation of Sports medicine. use more periods than commas. It will make the passage more easier to understand.