Cars drive over the estuary connecting Vietnam and Southwest China's Yunnan province, Nov 21, 2009. As western China's development strategy in the past decade thrives in Yunnan, the city is advancing regional cooperation and opening economic growth by building railways, highways, water and air transport. The establishment of China-Asia Free Trade Zone early this year not only connects Yunnan with Southwest China and other inland areas, but links Yunnan with Southeast Asia. [Photo/Xinhua]