Chinese mayors and officials participate in a panel discussion entitled "The China Perspective" during the C40 Hong Kong Workshop. (From left) Deputy Counsel of the PRC National Development and Reform Commission Department of Climate Change, Mr Sun Zhen, Vice-Mayor of Kunming, Mr Wang Daoxing, Mayor of Changsha, Mr Zhang Jianfei, Vice-Mayor of Shenzhen, Mr Tang Jie and the Secretary for the Environment, Mr Edward Yau.