Yangtze River

Guy's adventure starts in Chongqing, the fastest growing city in the world, where he works in a factory to build his own electric motorbike. He's surprised by the lack of automation - everything's assembled by a skilled workforce - and realises that it's symbolic of the wider Chinese economy, where 30 years of unprecedented growth have been sustained by a giant workforce. At the city's docks, he meets the 'Bang Bang Army', a group of ageing porters who rely on immense brute strength to haul huge loads. Guy's keen to lend a hand but can't shift the 200kg load without falling over, much to the amusement of the experienced Bang Bangs. His next stop is the world's biggest public convenience.