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Author: WikiMatrix
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English[en]
Ma Jun, a Chinese mechanical engineer from Cao Wei, invents the south-pointing chariot, a path-finding directional compass vehicle that uses a differential gear, not magnetics.
Spanish[es]
Ma Jun, un ingeniero mecánico chino del reino de Wei, inventa el Carro que apunta al Sur, un vehículo de brújula que usa una mecanismo diferencial, no magnética.