On May 9, the 2021 dissertation defense meeting of MME Center was held. Prof. Xu Xudong from the Institute of Hydrobiology CAS served as the chairman of the defense committee. Prof. Wen Mingzhang of Tianjin University, Prof. Liu Jin of Peking University, Mr. Wang Huaming, chief scientist of Vland Biotech, and Prof. Liu Tianzhong, Prof. Li Fuli, and Prof. Cong Zhiqi from Qingdao Institute of Bioenergy and Bioprocess Technology served as members of the defense committee.