![](http://www.ecns.cn/hd/2023/07/31/4f6c2b9169744fc6a66abe5e634598e4.jpg)
A special cake is made for giant panda Ding Ding at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)
Male giant panda Ru Yi, born in 2016, and female Ding Ding, born in 2017, arrived in Moscow in April 2019 for 15 years on a research project.
![](http://www.ecns.cn/hd/2023/07/31/ad32b062a586481da828bc7c4318cb45.jpg)
A special cake is made for giant panda Ding Ding at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)
![](http://www.ecns.cn/hd/2023/07/31/eb1a3e0b163644d8b2396786f89ee65b.jpg)
A special cake is made for giant panda Ding Ding at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)
![](http://www.ecns.cn/hd/2023/07/31/5ddaabef902f4336a97f93d6e2ea92ec.jpg)
Giant panda Ru Yi eats bamboo during a birthday party at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)
![](http://www.ecns.cn/hd/2023/07/31/05a1a812bd614e419f680b004b804852.jpg)
A staff member introduces giant pandas' living habits to kids at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)
![](http://www.ecns.cn/hd/2023/07/31/ec7934e9b412412ba2b55457edae097f.jpg)
Visitors celebrate birthdays for giant pandas Ding Ding and Ru Yi at the Moscow Zoo in Russia, July 30, 2023. (Photo: China News Service/Tian Bing)