Photo taken on Jan 19 shows that herders warm themselves around a fire near Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows a flock of sheep by Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows the winter scenery of  Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows a flock of sheep by Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows the winter scenery of  Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows a flock of sheep by Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.

Photo taken on Jan 19 shows the winter scenery of  Puma Yumco. [Photo/Xinhua] With an altitude of 5,010 meters, Puma Yumco, located in Nakartse County, Shannan of southwest China’s Tibet Autonomous Region.