Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows tyaks along the Yamdrok Lake after a snow in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)

Photo taken on Oct. 31 shows the snow scenery at the Yamdrok Lake in Nagarze County of Shannan Prefecture, southwest China's Tibet Autonomous Region.The Yamdrok Lake, about 100 kilometers south of the region's capital Lhasa, is one of the three holy lakes in Tibet region. (Xinhua/Liu Dongjun)