This aerial photo taken on Nov. 6, 2023 shows a view of Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

Tourists visit Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Nov. 6, 2023. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

This aerial photo taken on Nov. 6, 2023 shows a view of Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

This aerial photo taken on Nov. 6, 2023 shows a view of Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

Tourists visit Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Nov. 6, 2023. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

This aerial photo taken on Nov. 6, 2023 shows a view of Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)

A fox is pictured by Sayram Lake in Bortala Mongolian Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, Nov. 6, 2023. Sayram Lake is the largest and highest alpine lake in Xinjiang. (Xinhua/Li Xin)