Tourists go sightseeing at the Ling Qu Canal in Xing'an county, Southwest China's Guangxi Zhuang autonomous region, Aug 23, 2014. Built in the Year 214 BC, the Ling Qu Canal is one of the oldest canals in the world which links the Xiangjiang River and Guijiang River to form a north south waterway of the region.[Photo/Xinhua]