Known as the "City of Swans," Sanmenxia City is located on the southern bank of the Yellow River in central China's Henan Province. As winter comes, over 6,000 swans are flocking to wetlands and lakes in the city as their winter habitats. The vivid scenes of the long-necked, big-footed flying birds resting, flapping their wings and swimming majestically attract a growing number of tourists and photographers. Join CGTN to take a closer look at these graceful migratory birds.