Lingqu, called Qin Chisel Canal, Lingling Canal, Douhe Canal and Xing 'an Canal in ancient times, is a great project created by the working people of ancient Han nationality. Located in Xing 'an, Guangxi Zhuang Autonomous Region, it was opened to traffic in 2 14 BC. Lingqu from east to west connects Haiyang River in the east of Xing 'an (the source of Xiangjiang River flows from south to north) and Darong River in the west of Xing 'an (the source of Lijiang River flows from north to south). It is one of the oldest canals in the world and has the reputation of "the pearl of ancient water conservancy buildings in the world".