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 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 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)