One of the world's longest railways - a "modern-day silk road" - covers some 11,000 kilometres en route from the Chinesee megacity of Chongqing to Duisburg, a key commercial hub in western Germany. It's an industrial marvel lauded by both nations as AFP's Estelle Peard discovered.
Export giants Germany and China pledged to deepen their strategic during a landmark visit by Chinese President Xi Jinping to Berlin, which also saw the inking of a raft of economic pacts.
