Prof. Dr. Hui Cao is Nanjing Agricultural University's “133 key talents project” outstanding backbone teachers. The main research directions are the diversity of environmental microbes, the biological cycle of carbon and nitrogen in terrestrial ecosystems, the study of soil microbial biomass and proteomics. In recent years, he presided over the completion of three National Natural Science Foundation projects, presided over (including as thematic chair) or participated in national science and technology support programs, public welfare industry research projects, major national science and technology projects on water pollution control and treatment, as well as 17 provincial-level projects. He has published more than 70 papers, edited four monographs, and obtained six national invention patents.