Shoppers line up outside the PRADA shop at Tsim Sha Tsui, Hong Kong, on December 21, 2013. The Christmas holiday is the hottest season for shopping in Hong Kong, with the duty-free and Christmas-discount prices making the prices of luxury products much lower than those in other places of the world. This is simply a world famous shopping haven, attracting huge amounts of tourists, especially those from the Chinese mainland. [Photo/Sina]