He joined the Medical and Biological Examination Department of the Patent Office of the China National Intellectual Property Administration in 2002, was transferred to the Medical and Biological Appeal Division of the original Patent Reexamination Board in 2004, worked in the quality inspection team of the Bureau in 2008-2009, and was seconded to the Third Civil Division of the Supreme People's Court in 2010. At present, he is the director of the Biological Resources and Chemical Technology Appeals Division, the Patent Office of the China National Intellectual Property Administration, reexamination and invalidation hearing department, a first level investigator, and a second level examiner. High level talents from the China National Intellectual Property Administration.