Giant pandas rest at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)

A giant panda eats bamboo at the snow-covered Xining Panda House in Xining, capital city of northwest China's Qinghai Province, Nov. 21, 2020. (Xinhua/Wu Gang)