Giant panda Jiaoqing plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Giant panda Jiaoqing plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Giant panda Jiaoqing plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Giant panda Mengmeng plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Giant panda Jiaoqing plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Giant panda Mengmeng plays at Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)
Visitors walk past a poster of panda outside Berlin Zoo in Berlin, Germany. Mengmeng and Jiaoqing, the two giant pandas from China, arrived in Berlin on June 24, 2017. They became superstar during their first-year's stay here in Berlin Zoo. The panda pair will stay in Berlin Zoo for 15 years. (Photo: China News Service/Peng Dawei)