![A chimpanzee feeds on a piece of frozen watermelon to cool off from summer heat waves at Chongqing Zoo in southwest China\'s Chongqing, July 13, 2018. (Xinhua/Tang Yi)](http://www.ecns.cn/hd/2018/07/14/35264717ae1c4bf384649c07197a8115.jpg)
A chimpanzee feeds on a piece of frozen watermelon to cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
![A staff member feeds frozen food to giant pandas as a relief from summer heat waves at Chongqing Zoo in southwest China\'s Chongqing, July 13, 2018. (Xinhua/Tang Yi)](http://www.ecns.cn/hd/2018/07/14/6ee11d6390ed4e3883c9304542006cb6.jpg)
A staff member feeds frozen food to giant pandas as a relief from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
![Staff members shear a llama to help it cool off from summer heat waves at Chongqing Zoo in southwest China\'s Chongqing, July 13, 2018. (Xinhua/Tang Yi)](http://www.ecns.cn/hd/2018/07/14/de2000b11fcc40289f8af5b10091bfcf.jpg)
Staff members shear a llama to help it cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
![Frozen food is offered to a common squirrel monkey to help it cool off from summer heat waves at Chongqing Zoo in southwest China\'s Chongqing, July 13, 2018. (Xinhua/Tang Yi)](http://www.ecns.cn/hd/2018/07/14/8fe892b58855469d9e4a705166e40c2c.jpg)
Frozen food is offered to a common squirrel monkey to help it cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
![Giant pandas feed on frozen food to cool off from summer heat waves at Chongqing Zoo in southwest China\'s Chongqing, July 13, 2018. (Xinhua/Tang Yi)](http://www.ecns.cn/hd/2018/07/14/577c6c77cc1c463a96855b732a65e5c9.jpg)
Giant pandas feed on frozen food to cool off from summer heat waves at Chongqing Zoo in southwest China's Chongqing, July 13, 2018. (Xinhua/Tang Yi)
![Two monkeys cool off in a pond in Hongshan Forest Park in Nanjing, east China\'s Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)](http://www.ecns.cn/hd/2018/07/14/55731f64bc2f49df928215dc30488185.jpg)
Two monkeys cool off in a pond in Hongshan Forest Park in Nanjing, east China's Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)
![A giant panda cools off in a room equipped with air-conditioner in Hongshan Forest Park in Nanjing, east China\'s Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)](http://www.ecns.cn/hd/2018/07/14/9fa43ee253ca411984073f876067f0cf.jpg)
A giant panda cools off in a room equipped with air-conditioner in Hongshan Forest Park in Nanjing, east China's Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)
![Two parrots take a shower to cool off at a zoo in Zhuquan Village of Linyi City, east China\'s Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)](http://www.ecns.cn/hd/2018/07/14/30133722622d4c86815f66842803322d.jpg)
Two parrots take a shower to cool off at a zoo in Zhuquan Village of Linyi City, east China's Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)
![A bear takes a shower to cool off at a zoo in Zhuquan Village of Linyi City, east China\'s Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)](http://www.ecns.cn/hd/2018/07/14/53dca3ac99054b0a91b18e08d332df8e.jpg)
A bear takes a shower to cool off at a zoo in Zhuquan Village of Linyi City, east China's Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)
![A hippo cools off in a pond in Hongshan Forest Park in Nanjing, east China\'s Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)](http://www.ecns.cn/hd/2018/07/14/cfae0631ab3d4ed0be419d2cf43dd759.jpg)
A hippo cools off in a pond in Hongshan Forest Park in Nanjing, east China's Jiangsu Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Su Yang)
![A monkey eats watermelon to cool off at a zoo in Zhuquan Village of Linyi City, east China\'s Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)](http://www.ecns.cn/hd/2018/07/14/251ef055f8e14a08923ec0adc9de8edb.jpg)
A monkey eats watermelon to cool off at a zoo in Zhuquan Village of Linyi City, east China's Shandong Province, July 13, 2018. Zoo authorities have taken measures to keep the animals cool in the summer around China. (Xinhua/Wang Yanbing)