View of frozen Qinghai Lake in NW China

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Zhang Long)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Geng Huihuang)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Zhang Long)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Zhang Long)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Geng Huihuang)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Zhang Long)

An aerial drone photo taken on Jan. 25, 2024 shows a view of the frozen Qinghai Lake, China's largest inland saltwater lake, in northwest China's Qinghai Province. (Xinhua/Zhang Long)