![RUSSIA-MOSCOW-CHINA-PANDAS](http://www.xinhuanet.com/english/2019-06/06/138121311_15598640465131n.jpg)
Photo taken on June 4, 2019 shows the giant panda Ding Ding at Moscow Zoo in Moscow, Russia. Two giant pandas, three-year-old male Ru Yi and two-year-old female Ding Ding, arrived in Moscow in late April from China's southwestern province of Sichuan. They were formally handed over to Russia for a 15-year joint research program on Wednesday at an opening ceremony for the panda house in Moscow Zoo. (Xinhua/Bai Xueqi)