White ibises are sprayed with water to cool off at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

Ring tailed lemurs play in the water mist at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

A parrot is sprayed with water to cool off at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

Squirrel monkeys play in the water mist at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

A ring tailed lemur plays in the water mist at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

White ibises are sprayed with water to cool off at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)

A squirrel monkey plays in the water mist at Shanghai Zoo in east China's Shanghai, Aug. 11, 2020. The highest temperature in Shanghai reached 35 degrees Celsius on Tuesday. (Xinhua/Zhang Jiansong)