MBtv: China’s ‘Spidermen’: Litter-picking over the abyss

Dangling 400 metres (1,300 feet) over a void, suspended only by a cord, Yang Feiyue is not your average litter-picker. The 48-year-old’s job is to abseil down cliffs on central China’s Tianmen mountain — an area famed for its natural beauty but plagued by plastic and other waste.