Dr. Donghui Xu is a researcher at the Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, and the director of the Quality Safety and Testing Technology Laboratory of the Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences. He mainly researches vegetable product quality, safety and risk assessment, and nutritional quality evaluation of major vegetables. In the past five years, he has presided over and participated in more than 20 projects, including the National Natural Science Foundation, the National Major Project of Vegetable Product Quality and Safety Risk Assessment, the National Routine Monitoring of Agricultural Product Quality and Safety, the National Key R&D Program, the Basic Scientific Research Business Expenses of the Chinese Academy of Agricultural Sciences, and the Innovation Project of the Chinese Academy of Agricultural Sciences. In addition, he is also the deputy director and secretary general of the Agricultural Products Geographical Indication Professional Committee of the China Green Food Association, a member of the National Important Product Traceability Standardization Expert Group, a member of the Agricultural Products Nutrition Standards Expert Committee of the Ministry of Agriculture and Rural Affairs, and a member of the Editorial Board of "Quality and Safety of Agricultural Products".