Researcher and doctoral supervisor of Beijing Tongren Ophthalmological Center and Beijing Institute of Ophthalmology He is mainly engaged in clinical and basic research of corneal diseases and infectious eye diseases. Current: Expert member of Chinese Ophthalmology Branch Director of Asian Dry Eye Association Deputy Head of Tear and Ocular Surface Group of Ophthalmology Branch of Cross-Strait Medical and Health Exchange Association Honorary Director of Corneal Disease Research Institute and Honorary Head of Corneal Disease Group of Aier Medical Group He has published more than 100 professional articles and edited 7 monographs.