Twin panda cubs are seen at the Chongqing Zoo in southwest China's Chongqing, June 25, 2021. Giant panda Mang Zai gave birth to twins on June 10. The first cub weighed 161g and the second cub 151g. A staff member cares for one newly-born panda cub, while Mang Zai takes care of the other.Photo:China News Service

Twin panda cubs are seen at the Chongqing Zoo in southwest China's Chongqing, June 25, 2021. Giant panda Mang Zai gave birth to twins on June 10. The first cub weighed 161g and the second cub 151g. A staff member cares for one newly-born panda cub, while Mang Zai takes care of the other.Photo:China News Service

Twin panda cubs are seen at the Chongqing Zoo in southwest China's Chongqing, June 25, 2021. Giant panda Mang Zai gave birth to twins on June 10. The first cub weighed 161g and the second cub 151g. A staff member cares for one newly-born panda cub, while Mang Zai takes care of the other.Photo:China News Service

Giant panda Mang Zai holds her cub.Photo:China News Service