Migratory birds seen at Hunhe River in NE China's Shenyang

This photo taken on Nov. 23, 2023 shows migratory birds at the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds swimming in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows a migratory bird by the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds at the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds by the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This aerial photo taken on Nov. 23, 2023 shows migratory birds at the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds swimming in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds at the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)

This photo taken on Nov. 23, 2023 shows migratory birds in the Hunhe River in Shenyang, northeast China's Liaoning Province. (Xinhua/Yao Jianfeng)