Gok Wan returns to his ancestral home to explore the largely unseen world of Chinese mass production, meeting the people working in the factories that supply the West as part of a journey of discovery round a country that now produces one in every four man-made objects on the planet. Gok goes to 'Jeans Town', 'Bra Town', the factory that makes London cabs, and 'Thames Town', as well as to ultra-modern Shanghai, where he meets a stylist pushing the boundaries in Chinese fashion. (Channel 4)