Breeders pose for a group photo with giant panda cubs born in 2020 at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021. (Photos: China Conservation and Research Center for Giant Pandas/ Handout via Xinhua)

A giant panda cub born in 2020 plays at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021.

A giant panda cub born in 2020 plays at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021.

A giant panda cub born in 2020 plays at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021.

A giant panda cub born in 2020 plays at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021.

Giant panda cubs born in 2020 play at Shenshuping base of China Conservation and Research Center for Giant Pandas in Wolong National Nature Reserve, southwest China's Sichuan Province, Feb. 3, 2021.