![Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)](http://www.ecns.cn/hd/2018/07/27/77ca27e50a774c808d4410d4f2d1685b.jpg)
Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)
![Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)](http://www.ecns.cn/hd/2018/07/27/95631c22cfde43c5b88f5c0d8600610b.jpg)
Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)
![Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)](http://www.ecns.cn/hd/2018/07/27/051757e9a63d4f2bad853069813781af.jpg)
Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)
![Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)](http://www.ecns.cn/hd/2018/07/27/56b31d81cd524f8bb0245ae45f3a1e49.jpg)
Giant panda Mao Zhu enjoys a special cake made for its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)
![A visitor takes a picture of giant panda Mao Zhu during its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)](http://www.ecns.cn/hd/2018/07/27/4be584501e0c41529c47049c832f5253.jpg)
A visitor takes a picture of giant panda Mao Zhu during its 4thbirthday celebration at Yunnan Wildlife Zoo in Kunming City, Southwest China’s Yunnan Province, July 26, 2018. (Photo: China News Service/Liu Ranyang)