Qinling Giant Panda Research Center in Shaanxi witnesses birth of four cubs (5)

Photo taken on Aug. 20, 2021 shows a giant panda cub at the Qinling Giant Panda Research Center in northwest China's Shaanxi Province. In 2021, the research center has witnessed the birth of four cubs, which raised the number of captive Qinling giant pandas to 36. (Xinhua/Zhang Bowen)