Thousands of seagulls seen flying above Haihe River in north China's Tianjin

Seagulls fly above the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Zhao Zishuo)

People view seagulls by the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Zhao Zishuo)

Seagulls fly above the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Li Ran)

A tourist poses for photos by the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Li Ran)

Seagulls fly above the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Zhao Zishuo)

A seagull flies above the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Zhao Zishuo)

People view seagulls by the Haihe River in north China's Tianjin Municipality, Nov. 19, 2024. Thousands of seagulls have recently flocked to an obsolete dock by the Haihe River, turning it into a tourist attraction. (Xinhua/Zhao Zishuo)