The panda mascot of the Beijing Winter Olympics, Bing Dwen Dwen, which means "ice cub" in English, has become a huge hit. People have queued for hours in cold weather outside licensed merchandise stores to buy the figurines in Beijing. CGTN's Bi Ran talks to Cao Xue, head of the mascot's design team, about its skyrocketing popularity and the story behind the design of the colorful ribbon around the little panda's face.