Specialties: Periarticular fractures (specialty of shoulder, elbow, foot and ankle surgery), spinal cord injury, peripheral nerve injury Introduction: Professor, chief physician, doctoral supervisor, born in 1961, graduated from China Medical University in 1984, and successively studied under Professor Li Ji, a famous anatomy expert, Professor Feng Chuanhan, a famous orthopedics expert, and Academician Wang Shuhuan, an academician of the Chinese Academy of Engineering. He obtained Master of Medicine (China Medical University) and Doctor of Medicine (Beijing Medical University) degrees respectively. In 1990, he went to Niigata University in Japan as one of the first batch of doctors jointly trained by China and Japan in China. Since 1987, he has been engaged in orthopedic clinical work at Peking University People's Hospital.