![A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)](http://www.ecns.cn/hd/2019/02/25/9b02a6acbde64024b09a4e9e6f909ad6.jpg)
A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)
![A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)](http://www.ecns.cn/hd/2019/02/25/bd10af28a57b412f8eb8ab2a5f2b1a86.jpg)
A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)
![A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)](http://www.ecns.cn/hd/2019/02/25/9f12ffe635284420b10febb206697abe.jpg)
A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)
![A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)](http://www.ecns.cn/hd/2019/02/25/8e935d7831224704ac011dd5821e1104.jpg)
A 17-year-old chimpanzee performs stunts including a back flip and a headstand at the Locajoy Wildlife Park in Chongqing. (Photo: China News Service/Wang Chengjie)