Cars drive over the estuary connecting Vietnam and Southwest 皇冠体育app's Yunnan province, Nov 21, 2009. As western 皇冠体育app'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 皇冠体育app-Asia Free Trade Zone early this year not only connects Yunnan with Southwest 皇冠体育app and other inland areas, but links Yunnan with Southeast Asia. [Photo/Xinhua]