![](http://www.ecns.cn/hd/2020/06/23/2c7f7dfd65304416931b29d091f71f7c.jpg)
Four one-year-old giant panda cubs are seen at the Chongqing Zoo in southwest China's Chongqing, June 23, 2020. The zoo held a one-year-old birthday celebration for the four panda cubs named Shuangshuang, Chongchong and Xixi, Qingqing, which combine to symbolize "double joy and happiness" in Chinese. (Photo/China News Service)
![](http://www.ecns.cn/hd/2020/06/23/224c2fb4bc0b42baa9cd8e8f55f15f72.jpg)
Four one-year-old giant panda cubs are seen at the Chongqing Zoo in southwest China's Chongqing, June 23, 2020. The zoo held a one-year-old birthday celebration for the four panda cubs named Shuangshuang, Chongchong and Xixi, Qingqing, which combine to symbolize "double joy and happiness" in Chinese. (Photo/China News Service)
![](http://www.ecns.cn/hd/2020/06/23/8053805d934c45f0a50cc04c90696385.jpg)
Four one-year-old giant panda cubs play at the Chongqing Zoo in southwest China's Chongqing, June 23, 2020. The zoo held a one-year-old birthday celebration for the four panda cubs named Shuangshuang, Chongchong and Xixi, Qingqing, which combine to symbolize "double joy and happiness" in Chinese. (Photo/China News Service)
![](http://www.ecns.cn/hd/2020/06/23/f1918689253846dbbf0d99ac235d871e.jpg)
Two one-year-old giant panda cubs play at the Chongqing Zoo in southwest China's Chongqing, June 23, 2020. The zoo held a one-year-old birthday celebration for the four panda cubs named Shuangshuang, Chongchong and Xixi, Qingqing, which combine to symbolize "double joy and happiness" in Chinese. (Photo/China News Service)
![](http://www.ecns.cn/hd/2020/06/23/9e94ce2e220f4e0aa6ba1179b30f7b8c.jpg)
Photo taken on June 23, 2020 shows the special cake made of bamboo leaves, bamboo shoots, apples and carrots for the four giant panda cubs. (Photo/China News Service)
![](http://www.ecns.cn/hd/2020/06/23/5fd52327b4234cfea394943de4b45da4.jpg)
Four one-month-old giant panda cubs play at the Chongqing Zoo in southwest China's Chongqing, June 23, 2020. The zoo held a one-year-old birthday celebration for the four panda cubs named Shuangshuang, Chongchong and Xixi, Qingqing, which combine to symbolize "double joy and happiness" in Chinese. (Photo/China News Service)