
A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua

A drone photo taken on Nov. 14, 2025 shows whooper swans at the Xiaosugan lake wetland in Kazak Autonomous County of Aksay, northwest China's Gansu Province. Photo: Xinhua