Aerial photo taken on Dec 27, 2019 shows the Qinghai Lake in Northwest China's Qinghai province. The Qinghai Lake went into a "frozen period" in mid-December. [Photo/Xinhua]
Aerial photo taken on Dec 27, 2019 shows the Qinghai Lake in Northwest China's Qinghai province. [Photo/Xinhua]
Aerial photo taken on Dec 27, 2019 shows the Qinghai Lake in Northwest China's Qinghai province. [Photo/Xinhua]
Aerial photo taken on Dec 27, 2019 shows the Qinghai Lake in Northwest China's Qinghai province. [Photo/Xinhua]
Aerial photo taken on Dec 27, 2019 shows the Qinghai Lake in Northwest China's Qinghai province. [Photo/Xinhua]
