28 September 2013 Last updated at 17:56 BST American wingsuit flyer Jeb Corliss has performed a jump and dive through a narrow crevasse in the Langshan Mountain in Quzhou, in east China’s Zhejiang Province. The 298m-deep valley is 20m (65ft) wide at its widest point and only 3.5m (11ft) wide at its narrowest point. Two years ago he successfully…