Pavilions on Douqi River are photographed shrouded in mist, Liulin county, Lyuliang city, Shanxi province, Jan 11. The river is famous for its source, Liulin spring, a group of hot springs where the water maintains a temperature of 20 Celsius all year round, providing an ideal shelter for migrant birds. [Photo/Shanxi Daily]

A flock of birds flies over Douqi River where they will spend the winter, Lyuliang city, Shanxi province, Jan 11. [Photo/Shanxi Daily]