What is the function of the South Pointing Chariot?

[VanFinn]

South Pointing Chariot is a device used to indicate direction. South Pointing Chariot: Unlike the compass, which utilizes the geomagnetic effect, it does not rely on magnetism. It is a mechanical device that uses a mechanical transmission system to indicate direction, with principles and structures entirely different from those of the compass. Principle: The two-wheeled South Pointing Chariot is propelled by human power, and its internal mechanical transmission system transmits the differential movement of the two wheels during turning to drive the wooden figure on the chariot to rotate in the opposite direction but at the same angle as the chariot's turning direction. This ensures that the wooden figure always points in the direction set at the chariot's departure, regardless of how the chariot turns. "Though the chariot may turn, the figure's hand always points south."