Mr. Feng worked as a legal supervisor in a large state-owned enterprise. He has obtained lawyer's licence and patent agent's licence, and is now a full-time lawyer at Hai Run Law Firm. Mr. Feng specializes in major civil and commercial litigation and arbitration; major difficult criminal and civil cases; patent, trademark, copyright and other intellectual property litigation and non-litigation; corporate governance, labor and personnel, equity structure, capital increase; daily legal counseling, etc.

Mr. Feng's service areas cover from government agencies to aviation, banking and finance, culture and entertainment, Internet technology, chemical engineering and construction engineering, etc.; he served as the perennial legal counsel for dozens of companies including the Ministry of Commerce, Xinmao Comprehensive Commercial Company, Civil Aviation Express Co., Ltd., Beijing China Investment Video Culture Media Co., Ltd.,  State Grid Corporation, Beijing Electric Power Hospital, China Post Aviation Co., Ltd., Hebei Chengyue Chemical Co., Ltd., and Shanghai Jingyang Asset Management Co., Ltd.