Migrant birds are seen at the Hailiu reservoir in Tumd Left Banner in Hohhot, north China's Inner Mongolia Autonomous Region, March 28, 2022. (Xinhua/Liu Lei)
Migrant birds are seen at the Hailiu reservoir in Tumd Left Banner in Hohhot, north China's Inner Mongolia Autonomous Region, March 28, 2022. (Xinhua/Liu Lei)