Photo taken on Oct. 7, 2018 shows a water gate linking the main channel with Taolinkou Reservoir in Lulong Township of Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Aerial photo taken on Oct. 7, 2018 shows a water aqueduct of the main channel in Wujiagou Village of Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Farmers clear the mud in a water channel at Wujiagou Village of Lulong Township in Lulong County, north China's Hebei Province, Oct. 7, 2018. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Aerial photo taken on Oct. 7, 2018 shows the main channel and Qinglong River in Taolinying Village of Panzhuang Township in Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Aerial photo taken on Oct. 7, 2018 shows the main channel and rice field in Taolinying Village of Panzhuang Township in Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Aerial photo taken on Oct. 7, 2018 shows a water aqueduct of the main channel and a reservoir in Wujiagou Village of Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)

Aerial photo taken on Oct. 7, 2018 shows the main channel and rice field in Taolinying Village of Panzhuang Township in Lulong County, north China's Hebei Province. Lulong's irrigation system, consisting of hundreds of water channels and reservoirs, benefits 282,000 people in the county. (Xinhua/Yang Shiyao)