Expert's name: Lei Jianbo, deputy chief physician, Affiliated Hospital, Shanghai Meilun Plastic Surgery, Midland Johnson Cosmetic Surgery, Director of Education: Member of Medical Aesthetics and Beauty Branch of Chinese Medical Association, Honorary Member of Cosmetic Surgery Branch of International Medical Association, invited expert of Medical College of University of Southern California, senior expert of imperial body management, mandibular angle osteotomy locator, national patent inventor, and authoritative master of Asian maxillofacial contour plastic surgery.