A resident in Huludao city, Northeast China's Liaoning province, looks at the ice pile at a local beach, Jan 29, 2011. Chilly temperatures caused thousands of hectares of sea surface to freeze this winter. [Photo/Xinhua]

A herd of swans arrive at the Yellow River Wetland in Pinglu county of North China's Shanxi province, Jan 29, 2011. Over the winter, more than 1,000 swans have landed in the wetland as a result of improved environmental conditions in the area. [Photo/Xinhua]