46-year-old Wu Yulu has only a basic school education but has managed to build himself 26 robots from scrap materials over the past 30 years. At first his creations were simple and could barely shuffle along by themselves. The robots got more complex as time passed, and eventually he built ones capable of climbing walls, serving water, lighting cigarettes, playing musical instruments and writing calligraphy. "When I was 11, one day I was sitting on the doorstep, and while watching villagers passing by I suddenly came up with the idea of building a machine that walks like a man," he told the Beijing Times.

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