Xu Xian: Teacher Yang Yi's eldest daughter, born in 1970, has a bachelor's degree in Chinese language and literature, is a well-known expert in Chinese Academy of Management Sciences, a health management expert, a foot reflexologist and a foot reflexologist in the Ministry of Health. After graduating from college, under the influence of my mother, I gradually realized that it is my unshirkable responsibility and obligation to promote reflexology. Over the years, he has studied and practiced under Mr. Chen Chaohui from Beimei General Hospital, Mr. Ma Xiuqun, founder of myrrh medicine, and Mr. Feng Dawei, founder of painless acupuncture. Actively participate in the compilation of "Self-treatment of Hand-foot Diseases 3" and this book. He has made outstanding contributions to the teaching and practice of popularizing reflex therapy.