Photo taken on Aug. 9, 2020 shows the view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the night view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Huifeng lake in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of the intersection of Huifeng lake and Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Huifeng lake in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on July 31, 2020 shows cyclists riding along the Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the night view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Tangjin canal in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on Aug. 9, 2020 shows the view of Huifeng lake in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on July 25, 2020 shows the view of Renmin park in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)

Aerial photo taken on July 25, 2020 shows the view of Renmin park in Fengnan District of Tangshan, north China's Hebei Province. (Xinhua/Yang Shiyao)