Participants attend the ceremony marking the establishment of China-ASEAN Free Trade Area (FTA), the world's largest FTA of developing countries, in Nanning, capital of southwest China's Guangxi Zhuang Autonomous Region, January 7, 2010. Officially established last Friday, the FTA covers a population of 1.9 billion and accounts for about US$4.5 trillion in trade volume. [Xinhua]