A breeder feeds a giant panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province, Oct. 20, 2021. (Photo: China News Service/An Yuan)

Shenshuping base has welcomed more than 20 giant panda cubs in 2021.

Photo taken on Oct. 20, 2021 shows a panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province. (Photo: China News Service/An Yuan)

Photo taken on Oct. 20, 2021 shows a panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province. (Photo: China News Service/An Yuan)

A breeder weighs a giant panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province, Oct. 20, 2021. (Photo: China News Service/An Yuan)

Six giant panda cubs rest in baskets at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province, Oct. 20, 2021. (Photo: China News Service/An Yuan)

Photo taken on Oct. 20, 2021 shows two panda cubs at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province. (Photo: China News Service/An Yuan)

Photo taken on Oct. 20, 2021 shows two panda cubs at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province. (Photo: China News Service/An Yuan)

Photo taken on Oct. 20, 2021 shows a panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province. (Photo: China News Service/An Yuan)

A breeder defecates a giant panda cub at Shenshuping base of China Conservation and Research Center for the Giant Panda, Wolong National Nature Reserve, Sichuan Province, Oct. 20, 2021. (Photo: China News Service/An Yuan)