A herd of cattle forage by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 15, 2025. (Xinhua/Wang Fei)

An aerial drone photo taken on Dec. 16, 2025 shows the Sayram Lake and snow mountain in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. (Photo by Xu Rui/Xinhua)

A herdsman (L) riding a camel is seen by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 15, 2025. (Xinhua/Wang Fei)

This photo taken on Dec. 16, 2025 shows the Sayram Lake with snow mountain in the background in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Wang Fei)

Tourists have fun by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 16, 2025. (Photo by Xu Rui/Xinhua)

Tourists take selfies by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 16, 2025. (Xinhua/Wang Fei)

Tourists take photos by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 15, 2025. (Xinhua/Wang Fei)

Tourists are seen by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 15, 2025. (Photo by Xu Rui/Xinhua)

A boat is seen on the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 16, 2025. (Xinhua/Wang Fei)

Tourists have fun on the frozen surface of the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 16, 2025. (Photo by Xu Rui/Xinhua)

Tourists have fun by the Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Dec. 15, 2025. (Xinhua/Wang Fei)