
Tourists sightsee on a boat in Anju ancient city in Tongliang County of Chongqing, southwest China, April 30, 2017. Many tourists come to Anju ancient city to spend their Labor Day holiday. (Xinhua/Liu Chan)

Tourists sightsee on a boat in Anju ancient city in Tongliang County of Chongqing, southwest China, April 30, 2017. Many tourists come to Anju ancient city to spend their Labor Day holiday. (Xinhua/Liu Chan)