Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)

Qizai, a rare brown and white giant panda, is seen at Qinling Research Base of Giant Panda Breeding of Shaanxi Academy of Forestry in Xi'an, northwest China's Shaanxi Province, Dec. 3, 2019. (Xinhua/Zhang Bowen)