Dr. Huidong Zhang is a professor at Public Health School of West China, Sichuan University, China. He received his Ph.D. in physical chemistry from Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and has worked as a postdoctoral fellow and senior researcher at Vanderbilt University and Harvard Medical School. He became a full professor at Institute of Toxicology, School of Preventive Medicine, Third Military Medical University in 2013 and moved to Sichuan University in 2018.Dr. Jie Yan, Associated Professor of Peking University Third Hospital. Her research group focus on the basic and clinical translation research on human fertility maintenance and preservation. She has clarified the important roles of in vivo microenvironment in human follicular development, revealed the regulation mechanism of microenvironment factors for human follicle development in vitro, established OP-IVM ＂egg bank＂ that has significantly improved pregnancy outcome, analyzed the bionic ice control mechanism of germ cell cryopreservation, and invented the novel cryopreservation medium with natural amino acid as the core component that has already been translated. She has published 69 papers in Mol Cell or other international or national authoritative academic journals, which have been totally cited by 1733 times (H-index 20). She has won seven national authorized patents and the First Prize of Chinese Medical Science and Technology Award.