![Photo shows a snow-covered building on a mountain in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Chogo)](http://www.ecns.cn/hd/2018/12/20/dd01a69b2b9e439cbe7a506640407d46.jpg)
Photo shows a snow-covered building on a mountain in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Chogo)
![Photo shows the snow-covered Potala Palace in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)](http://www.ecns.cn/hd/2018/12/20/51da311183514af9b59faa1d555fca71.jpg)
Photo shows the snow-covered Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)
![Aerial photo shows the view of a snow-covered park in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)](http://www.ecns.cn/hd/2018/12/20/96408e3e8e5d4096992b921d3ec4e66c.jpg)
Aerial photo shows the view of a snow-covered park in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)
![A tourist takes photos at the snow-covered Potala Palace square in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Liu Dongjun)](http://www.ecns.cn/hd/2018/12/20/1d58e0cc9d0a4bb68ef2f30a4dae3ccf.jpg)
A tourist takes photos at the snow-covered Potala Palace square in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Liu Dongjun)
![Birds are seen at the snow-covered Potala Palace square in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Chogo)](http://www.ecns.cn/hd/2018/12/20/b3c058754f284aaa8149f4a40ae2c648.jpg)
Birds are seen at the snow-covered Potala Palace square in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Chogo)
![Aerial photo shows the snow-covered Potala Palace in Lhasa, capital of southwest China\'s Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)](http://www.ecns.cn/hd/2018/12/20/c10cb38871ed44d8bdaddb6fa93b1971.jpg)
Aerial photo shows the snow-covered Potala Palace in Lhasa, capital of southwest China's Tibet Autonomous Region, Dec. 19, 2018. Lhasa witnessed the first snow this winter on Tuesday. (Xinhua/Purbu Zhaxi)