As US President Donald Trump left Beijing yesterday for the Asia-Pacific Economic Cooperation summit in Danang, Vietnam, Mrs Melania Trump stayed behind in China to play tourist. At the Beijing Zoo, the 47-year-old former model fed a giant panda named Gu Gu and greeted a group of children waving Chinese and American flags - handing out stuffed toy eagles after watching them sing a Chinese folk song. Later, Mrs Trump walked along a section of the Great Wall, a Unesco World Heritage Site where Chinese officials often take visiting heads of state and their spouses.