On this private guided day trip from chengdu visit the dujiangyan irrigation system and qingcheng mountain the great dujiangyan irrigation project is honored as the treasure of sichuan and it still plays a crucial role in the draining off of floodwater irrigating farms and providing water resources for more than 50 cities in the province qingcheng mountain is one of the most famous taoist mountains in china in china chengdu is always praised as tian fu zhi guo which means natures sto