Ma Xin, male, chief physician, distinguished professor of Shandong University, doctoral supervisor. Distinguished professor, doctoral supervisor of Baylor Medical College, USA, member of American Lifestyle Medical Association, co-founder and first president of China Lifestyle Medical Association. Professor Ma Xin is a physician of Peking Union Medical College Hospital and a doctoral student in gastroenterology. He was invited to be a judge of the National Natural Science Foundation and a judge of Changjiang Scholars of the Ministry of Education. Deputy director of Hanguang International Infectious Disease Research Center of Shandong Chest Hospital affiliated to Shandong University, and head of NIH Sino-US cooperation project. Shandong Province has two consecutive Taishan scholars as overseas distinguished experts.