Yi Xiaozhun, deputy director-general of the World Trade Organization (WTO), addresses the opening ceremony of the 11th China-ASEAN Expo in Nanning, capital of south China's Guangxi Zhuang Autonomous Region, Sept. 16, 2014. The expo kicked off here on Tuesday, with over 2,300 companies from China and the Association of Southeast Asian Nations (ASEAN) attending the event.(Xinhua/Huang Xiaobang)