Professor Leung’s research areas including Orthopaedics, Osteoporosis, Microsurgery, Public Health, Traditional Chinese Medicine and General Education. He is also the author of over 800 scientific manuscripts in journals and 27 books. Professor Leung has been appointed as editor of 11 International Journals since 1982. He is trying hard to develop a research methodology basing on modern clinical science requirements, to modernise on Traditional Chinese medicine.