Giant panda Lotti, known in Chinese as Meng Tian, enjoys a special ice cake at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)

People take photos of giant pandas during a birthday celebration for giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)

Giant panda twins Leni (R) and Lotti, known in Chinese as Meng Hao and Meng Tian, enjoy a special ice cake at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)

This photo taken by a mobile phone shows giant panda Lotti, known in Chinese as Meng Tian, enjoying a special ice cake at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)

This photo taken by a mobile phone shows giant panda twins Leni (R) and Lotti, known in Chinese as Meng Hao and Meng Tian, enjoying a special ice cake at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)

This photo taken by a mobile phone shows giant panda Lotti, known in Chinese as Meng Tian, at Zoo Berlin in Berlin, Germany, on Aug. 21, 2026. To celebrate their second birthday, giant panda twins Leni and Lotti, known in Chinese as Meng Hao and Meng Tian, were treated to a special ice cake at Zoo Berlin on Friday, a day ahead of their birthday. (Xinhua/Zhu Yinan)