Having learned Mandarin, and travelling alone by foot, bicycle and train, Colin Thubron set off on a 10,000 mile journey from Beijing to the borders of Burma. He travelled through the wind-swept wastes of the Gobi desert and finished at the far end of the Great Wall. What Thubron reveals is an astonishing diversity, a land whose still unmeasured resources strain to meet an awesome demand, and an ancient people still reeling from the devastation of the Cultural Revolution.