A pair of vases from the Yuan dynasty in China, made from instantly-recognisable blue and white porcelain. Neil MacGregor, Director of the British Museum, describes the history of porcelain and the use of these vases in a temple setting. Historian Craig Clunas talks about the volatile world of Yuan China and writer Jenny Uglow tries to put her finger on why we find Chinese porcelain so appealing. (Duration: 15 mins)