A large number of wild ducks swim in the Hunhe River in Shenyang, capital of Liaoning province, on Feb 12. The ducks come here to spend winter. [Photo/VCG]

A flock of wild ducks fly above the Hunhe River in Shenyang, Liaoning province, Feb 12. [Photo/VCG]

A visitor photographs wild ducks on the Hunhe River in Shenyang on Feb 12. [Photo/VCG]