A drone photo taken on Oct. 20, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 11, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 20, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 20, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 11, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 11, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 11, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)
A drone photo taken on Oct. 17, 2026 shows swans on Ganhe River in Jiagedaqi, the Greater Khingan Mountains, northeast China's Heilongjiang Province. (Photo by Zhuang Yu/Xinhua)