Yuan Guoan: graduated from Wuhan University School of Medicine, majoring in clinical medicine and medical technology, with a postgraduate degree from Hubei Medical University. Member of Plastic and Aesthetic Physician Branch of Chinese Medical Doctor Association; Member physician of the World Hair Transplant Association, currently the chief physician of Biliansheng International Traceless Hair Transplant Hospital. 20 10 Director Yuan Guoan, as the main author, published the monograph "Stylish Traceless Hair Transplanting" in Chinese mainland.