Guanshan Yang is currently a senior partner of Beijing Dacheng Law Offices, the leader of Dacheng Engineering and Infrastructure Industry Committee, the co-leader of Dacheng Housing Construction and Energy Professional Committee, the head of the Engineering and infrastructure industry Group of Dacheng Beijing Headquarters, the director of Dacheng Compliance Legal Service Center, and the member of Dacheng Human Resources Planning and Assessment Committee. Perennial legal advisor, Ministry of Natural Resources, PRC.

In 2003, Mr. Yang worked for the Policy and Regulation Department of the State-owned Assets Supervision and Administration Commission of the State Council, where he was responsible for drafting the "Management Measures for Legal Advisers of State-owned Enterprises" and participating in the coordination of several major economic disputes of central enterprises.Guanshan Yang has been responsible for the legal affairs of large central enterprises for a long time, during which he participated in a large number of domestic and foreign infrastructure construction projects, real estate development projects, mining exploration and development projects, successfully led the handling of a number of major international and domestic litigation and arbitration cases, and accumulated rich experience in the group's legal affairs management. After joining Dacheng, Guanshan Yang with the combination of legal and business thinking and the ability to comprehensively apply law to solve problems, focuses on infrastructure construction, Public-Private Partnership (PPP), mining and energy fields. He has delivered more than 80 lectures and trainings for central enterprises, local state-owned enterprises, large private enterprises and lawyers associations, and published more than 30 professional articles, which have been highly recognized by customers and peers.