Tourists watch water gushing out from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province, July 2, 2019. (Photo: Xinhua)

Tourists watch water gushing out from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province, July 2, 2019.(Photo: Xinhua)

Tourists watch water gushing out from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province, July 2, 2019.(Photo: Xinhua)

Tourists watch water gushing out from the Xiaolangdi Reservoir on the Yellow River in central China's Henan Province, July 2, 2019.(Photo: Xinhua)