Ji Li, professor of agroecology in Department of Ecology and Ecological Engineering, College of Resources and Environmental Engineering, China Agricultural University. He’s also the deputy chairman of the ecological engineering committee of Ecological Society of China, and the board member of the Chinese Society of Agro-Ecological Environment Protection, and member of the Society of solid waste committee of Chinese Society for Environmental Sciences. He has been engaged in ecological agriculture and organic wastes treatment for 15 years, and hosted more than twenty national and provincial research projects, and organized a number of projects cooperated with Germany, England and America. Moreover, he has established China composting network and hosted ten composting technology and engineering conferences since 2004. He published around 200 papers including 34 international journals’ papers, and 8 books.