Aerial view of Lingqu Canal, one of the world's oldest and most well-preserved artificial canals, in Xing'an County of Guilin, south China's Guangxi Zhuang Autonomous Region, Oct. 11, 2023.

Lingqu was built in 214 B.C. during the Qin Dynasty (221-206 B.C.) winding some 37 kilometers. It was inscribed on the World Heritage Irrigation Structures in 2018. (Photo: China News Service/Chen Guanyan)