Mei Xu is a Chinese American entrepreneur who made it big in the US by setting up a global candle business. She grew up in Chairman Mao's communist China, but was educated at an elite school, where she learnt English with the aim of becoming a diplomat. That was until the pro-democracy, student protests of Tiananmen Square in 1989. After that she managed to get a passport out of China and went to the USA, where she set up her multi-million dollar business. What does her story tell us about the state of the American economy and the growth of China as an economic superpower?