Birds perch on flowing ice at the Yellow River's middle reaches in Dalad Banner of Erdos, north China's Inner Mongolia Autonomous Region, Nov. 27, 2021. (Xinhua/Jia Lijun)
Birds fly over the Yellow River's middle reaches in Dalad Banner of Erdos, north China's Inner Mongolia Autonomous Region, Nov. 27, 2021. (Xinhua/Jia Lijun)
Birds perch on flowing ice at the Yellow River's middle reaches in Dalad Banner of Erdos, north China's Inner Mongolia Autonomous Region, Nov. 27, 2021. (Xinhua/Jia Lijun)
Birds fly over the Yellow River's middle reaches in Dalad Banner of Erdos, north China's Inner Mongolia Autonomous Region, Nov. 28, 2021. (Xinhua/Jia Lijun)
