Four ancient Chinese irrigation (灌溉) sites have been honored as World Heritage Irrigation Structures,     1    has brought the total number of irrigation projects in China on the list to 23.

Tianbao Weir (堰), one of the newly     2     (award) projects, is situated in Fujian Province. With a history of over 1, 200 years, the weir is the     3     (old) existing water project specifically aimed at stopping saltwater and storing freshwater.

Longshou Canal and Ancient Luohe River Irrigation District in Shaanxi Province is said to be the first underground canal in China’s history. The canal is a major branch of the Yellow River,     4     (provide) irrigation for local farms in the face of     5     (dry) and water shortage.

The Weirs of Baishaxi Stream Project in east China’s Zhejiang Province is made     6    of 36 weirs, 21 of which still offer irrigation water. The project covers 45 kilometers of the Baishaxi Stream and has a total water level drop of 168 meters.

Sangyuanwei Polder Embankment (堤) System     7     (locate) in south China’s Guangdong Province, which was first built     8    the 10th century. The embankment extends for 64.8 km and the system provides irrigation, drainage canals and water     9     (pathway).

The ancient irrigation projects are treasures of the development of Chinese water culture     10    of great value for the development of Irrigation agriculture in China.