Braving the chill, runners in their underwear take part in a 5-km competition to welcome the winter solstice festival, which fell on Dec 22, in Southwest China's Chongqing municipality on Dec 21, 2014. The winter solstice marks the shortest day of the year in northern hemisphere. About 300 participants, with some of whom drawing colorful pictures and characters on their bodies, participated in the event. [Photo/IC]