Photography enthusiasts take photos of the long-span Aizhai suspension bridge in Xiangxi Tujia and Miao Autonomous Prefecture, central China's Hunan Province, March 31, 2012. Aizhai suspension bridge, with a main span of 1,176 meters and a maximum height of 330 meters, was open to traffic on Saturday. Spanning over the Dehang canyon, the bridge was built as part of the expressway from southwest China's Chongqing Municipality to Changsha city in Hunan. Its completion would greatly improve the transportation between the two cities, according to authorities. [Xinhua]