Professor of Ecology at Beijing Normal University. Member of the China Endangered Species Scientific Committee; Steering Committee member of the IUCN Climate Crisis Commission; Executive Director of the All China Environmental Protection Federation; Executive Director of the Chinese Society of Zoology, Deputy Director of the Conservation Biology Branch, and Executive Director of the Mammalogy Branch of CSZ; Deputy Director of the Animal Ecology Committee of China Ecological Society. Editorial board member of the journal <Conservation Biology>. Long engaged in research on endangerment mechanisms and adaptability of endangered species represented by Asian elephants, ecosystem services and value assessment of natural protected areas, climate change mitigation and adaptation, ecological compensation, the Convention on International Trade in Endangered Species, and environmental policy research related to the United Nations Framework Convention on Climate Change. Has published multiple opinion pieces in Nature and Science, as well as peer reviewed research papers in journals such as Nature Ecology and Evolution, PNAS, Trends in Ecology and Evolution, Conservation Letters, and Biological Conservation etc.