Zhang Guang, Senior Partner of Beijing Qiancheng Law Firm, Secretary of the Second Party Branch of Qiancheng, and Secretary of the Youth League General Branch. He has served as a judge in a basic court in Beijing and Beijing Supreme People's Court and has tried more than 1,000 civil and commercial disputes for a long time. He is currently a member of the "Hundred Talents in Law" of Beijing Law Community, a part-time teacher of the School of Master of Laws of China University of Political Science and Law, a part-time teacher of Beijing courts, a member of China Applied Law Community, a member of the Professional Committee of Beijing Debt Law Research Association, and a infringement law of Shandong Lawyers Association Experts hired outside the committee, "Members of Judicial Professional and Technical Talent Pool" of the Judicial Department of Inner Mongolia Autonomous Region, etc. He published 1 monograph, participated in the compilation of 9 books, and has more than 40 academic papers.

Participated in the compilation of some judicial interpretations of the Supreme People’s Court, participated in the two national-level topics "Research on Internet Medical Legal Issues" and "Research on Legal Issues of Medical and Health Big Data" hosted by the National Health Commission, and "Research on Legal Issues in Combination of Medical Care and Healthcare". The personal monograph "The Judge's Talk: A Guide book for Legal Risk Prevention and Control of Medical Institutions" was awarded the "Commonly Fighting the Epidemic, Rule of Law First" recommended by the legal system for epidemic prevention and control.

He is good at litigation agency in domestic civil and commercial cases and analysis of major difficult cases. He has dealt with litigation dispute resolution cases for a long time. The case has been reported by CCTV's "News 1+1" column and has had an impact nationwide. He has provided litigation services in dispute resolution cases for well-known companies such as China Mobile, Sinopec, Bank of Ningbo, Shaoxing Bank, Sina, Shanghai Weishi and Ningde New Energy. Provide common law and special services for large enterprises such as China Chemical Group, Ping An Insurance, and China Railway Construction. Provide regular legal services to dozens of domestic medical institutions such as Beijing Cancer Hospital, Tiantan Hospital, Shenzhen Third Hospital, etc. He has participated in the recording of many media legal programs such as China Central Television, China Central People’s Broadcasting Station, and Shanghai Oriental TV. He makes Long-term lectures for major enterprises and institutions, investment companies, and colleges and universities.