Dujiangyan

The Dujiangyan (Chinese: 都江堰; pinyin: Dūjiāngyàn) is an ancient irrigation system in Dujiangyan City, Sichuan, China. Originally constructed around 256 BC by the State of Qin as an irrigation and flood control project, it is still in use today. The system's infrastructure develops on the Min River (Minjiang), the longest tributary of the Yangtze.

Mount Qingcheng (Chinese: 青城山; pinyin: Qīngchéng Shān) is a mountain in Dujiangyan, Sichuan, China. It is considered one of the birthplaces of Taoism (Daoism) and one of the most important Taoist centres in China. In Taoist mythology, it was the site of the Yellow Emperor's studies with Ning Fengzi. As a centre of the Taoist religion it became host to many temples.