Peacekeeping is a job for enthusiastic people, who needs to go deep into areas suffering from disasters and misfortune. This year marks the 30th anniversary of China's participation in UN peacekeeping operations. What are the unique advantages of Chinese military participation in peacekeeping operations? What does the Chinese army, unwilling to be a "world policeman", do in overseas peacekeeping operations? Zhou Bo, a researcher of Center for International Security and Strategic, Tsinghua University, China Forum expert, and former director of the Center for Security Cooperation in the office for International Military Cooperation, was interviewed by Han Hua, member of China Forum Executive Committee and CGTN commentator.