Local school and college graduates attend a graduation celebration at Playa Maya Water Park in east China's Shanghai, Aug. 8, 2020. (Photos: Xinhua)

Tourists ride a rubber boat at Playa Maya Water Park in east China's Shanghai, Aug. 8, 2020.

Tourists have fun at Playa Maya Water Park in east China's Shanghai, Aug. 8, 2020.

A boy splashes around in a fountain at Playa Maya Water Park in east China's Shanghai, Aug. 8, 2020.

Tourists have fun at Playa Maya Water Park in east China's Shanghai, Aug. 8, 2020.