File photo of Dujiangyan irrigation system, a major landmark in the development of water management and technology that is still discharging its functions. (Photo: China News Service/He Bo)
File photo of Dujiangyan irrigation system, a major landmark in the development of water management and technology that is still discharging its functions. (Photo: China News Service/He Bo)
File photo of Dujiangyan irrigation system, a major landmark in the development of water management and technology that is still discharging its functions. (Photo: China News Service/He Bo)
File photo of Dujiangyan irrigation system, a major landmark in the development of water management and technology that is still discharging its functions. (Photo: China News Service/He Bo)
File photo of Lingqu Canal, one of the oldest and well-preserved ancient water conservation projects in the world. (Photo/VCG)
File photo of Lingqu Canal, one of the oldest and well-preserved ancient water conservation projects in the world. (Photo/VCG)
File photo of Lingqu Canal, one of the oldest and well-preserved ancient water conservation projects in the world. (Photo/VCG)
File photo of Baiqi Canal. (Photo provided to China News Service)
A statue of general Bai Qi in Qin Dynasty in Xiangyang City, Hubei Province. (Photo provided to China News Service)
File photo of Baiqi Canal. (Photo provided to China News Service)
File photo of Baiqi Canal. (Photo provided to China News Service)
Renovation of the Dujiangyan irrigation system, major landmark in the development of water management and technology that is still discharging its functions. water conservation project in 2014. (Photo: China News Service/Zhang Lang)
Renovation of the Dujiangyan irrigation system, major landmark in the development of water management and technology that is still discharging its functions. water conservation project in 2014. (Photo: China News Service/Zhang Lang)
