The candle is lit in the lamp, and the heat generated by the candle causes air flow, which makes the axle rotate. There are paper cuts on the axle. The candle light projects the shadow of paper-cut on the screen, and the image will move.
Because most of the lights are painted on each side of the ancient martial general riding pictures, and the lights turn like several people chasing each other, so they are named riding lamps.
As a result of the horse lamp as if several people are chasing each other, it is also used to describe things that travel and go. In Japanese traditional literature, walking horse lamp is the seasonal language in summer.