Winter scenery of Xixi Wetland in Hangzhou, E China

This aerial photo taken on Jan. 9, 2024 shows boats sailing at the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

This aerial photo taken on Jan. 9, 2024 shows waterfowls flying over the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

This aerial photo taken on Jan. 9, 2024 shows a boat sailing at the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

This aerial photo taken on Jan. 9, 2024 shows a boat sailing at the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

This aerial photo taken on Jan. 9, 2024 shows boats sailing at the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)

This aerial photo taken on Jan. 9, 2024 shows tourists visiting the Xixi Wetland in Hangzhou, east China's Zhejiang Province. (Xinhua/Weng Xinyang)