Li Ji is a Professor at the College of Resources and Environmental Sciences, China Agricultural University, a Doctoral Supervisor, and serves as the Dean of the China Agricultural University Organic Recycling Research Institute (Suzhou). He has long been engaged in research and development in the fields of organic waste composting, organic agriculture, and ecological agriculture. Over the past decade, he has led and participated in more than 20 national-level research projects, including the "Twelfth Five-Year" National Science and Technology Support Program project "Key Technologies for Efficient Recycling of Agricultural Wastes" (2012BAD14B01) (2012–2016), and the "Thirteenth Five-Year" National Key Research and Development Program project "Aerobic Fermentation Technology and Intelligent Control Equipment Development for Agricultural Wastes" (2016YFD0800601) (2016–2020). He has authored or co-authored 13 books and published over 300 papers, including 80 in SCI-indexed journals. He has received six first-prize awards for scientific and technological progress at the provincial and ministerial levels, one second-prize award for technological invention from the Ministry of Education, and has filed for and been granted 30 national invention patents.