Dr. Dongdong Yan, Professor in Institute of Plant Protection, Chinese Academy of Agricultural Sciences(IPP,CAAS). He received doctoral degree in CAAS, and received bachelor degree in HZAU. He joined the National Key Research and Development Program of China(2017YFD0201600,2023YFD1701200) ,"Research and development on seed, seedling and soil treatment technologies and machineries" and "Development of Environmental-Friendly and Novel Technologies and Products on Soil and Grain Fumigation".