This photo shows the starry sky taken near the "black lake" of the "three-colored lakes" in Banbar County of Qamdo, southwest China's Tibet Autonomous Region, Sept. 16, 2023. (Photo: Xinhua)

This photo taken on Oct. 7, 2023 shows the snow mountain in Banbar County of Qamdo, southwest China's Tibet Autonomous Region.(Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows the "black lake" of the "three-colored lakes" in Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows the "black lake" of the "three-colored lakes" in Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This aerial photo taken on Oct. 27, 2023 shows the "black lake" of the "three-colored lakes" in Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows an ice cave near Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows an ice cave near Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows an ice cave near Puyu Village of Banbar County, Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows blue sheep walking on a snow mountain in Banbar County of Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

This photo taken on Oct. 27, 2023 shows the snow mountain in Banbar County of Qamdo, southwest China's Tibet Autonomous Region. (Photo: Xinhua)