I first met Xiaogang Peng in the summer of 1992 at Jilin University in Changchun, in the remote north-east of China, where he was a postgraduate student in the department of chemistry. He told me that his dream was to get a place at a top American lab. Now, Xiaogang was evidently smart and hard-working – but so, as far as I could see, were most Chinese science students. I wished him well, but couldn’t help thinking he’d set himself a massive challenge.
