Hui Xia Yang is the Director of the Department of Obstetrics and Gynecology at Peking University First Hospital, Professor, Chief Physician, and Doctoral Supervisor. She is a recipient of the State Council Special Allowance of China. Prof. Yang serves as Vice Chair of the Obstetrics and Gynecology Branch of the Chinese Medical Association and Chair of the National Obstetrics Group. She is also a Standing Committee Member of the Perinatal Medicine Branch of the Chinese Medical Association and Chair of the Perinatal Nutrition and Metabolism Group. She is Vice President of the National Research Association for Maternal and Child Health and Chair of its Maternal-Fetal Medicine Professional Committee. She serves as a Standing Committee Member of the Obstetrics and Gynecology Branch of the Chinese Medical Doctor Association and Vice Chair of its Maternal-Fetal Medicine Professional Committee. She is also Chair of the Professional Committee on Early Life Development and Disease Control of the Chinese Preventive Medicine Association. Prof. Yang is an expert member of the Maternal-Fetal Medicine Group of the International Federation of Gynecology and Obstetrics (FIGO), a Board Member of the International Society for Developmental Origins of Health and Disease (DOHaD), and a member of the World Health Organization (WHO) Expert Group on Diagnostic Criteria for Gestational Diabetes Mellitus. She serves as the FIGO Regional Ambassador for Preconception and Pregnancy Nutrition among Adolescents and Women of Reproductive Age. Prof. Yang is Editor-in-Chief of Chinese Journal of Perinatal Medicine. She founded Maternal Fetal Medicine and serves as its Co-Editor-in-Chief. She is Deputy Editor-in-Chief of Chinese Journal of Obstetrics and Gynecology and Chinese Journal of Obstetric Emergency Medicine (Electronic Edition), and serves as Deputy Editor of American Journal of Obstetrics & Gynecology.