A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)

A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)

A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)

A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)

A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)

A giant panda plays in snow at Xi'an Qinling Zoological Park at the foot of Qinling Mountains in Xi'an, capital of northwest China's Shaanxi Province, Jan. 7, 2018. (Xinhua/Gou Bingchen)