From 65438 to 0993, he went to the Rowett Institute of Nutrition and Health (RINH) of the University of Aberdeen in the UK to study and work for two years. During this period, comet electrophoresis (also known as "single cell gel electrophoresis") technology for detecting DNA damage has been improved. Two papers related to this were published in Cancer Research and Mutation Research, and were cited 39 1 time and 368 times respectively (Information Consulting Department of Peking University Medical Library: 12-048, 20 12).
1995 After returning to China, he came to the Medical College of Qingdao University as a talent introduction and served as the head of the nutrition department at that time. In the following 20 years, he went abroad for academic exchanges many times. He visited the University of Leeds in England, the Nutrition Research Center for the Elderly of Tufts University, Harvard University and Copenhagen University in Denmark. University of Helsinki in Finland, Royal Academy of Swedish Academy, South Africa, Philippines, India, Thailand, Spain, Mexico, Taiwan Province Province, Hongkong, Macau and other countries or regions visited and exchanged views, and established cooperative relations with many institutions and researchers. 20 10 was officially awarded the doctor's degree in medical nutrition by the Human Nutrition Research Center of Vakhnin University in the Netherlands for its outstanding contribution and achievements in the field of nutrition.