The South Pointing Chariot is widely regarded as one of the most complex geared mechanisms of the ancient Chinese civilization, and was continually used throughout the medieval period as well. It was supposedly invented sometime around 2600 BC in China by the Yellow Emperor, yet the first valid historical version was created by Ma Jun (c. 200-265 AD) of Cao Wei during the Three Kingdoms. The chariot is a two-wheeled vehicle upon which is a pointing figure connected to the wheels by means of differential gearing.

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