A standing mustache with legs is able to sell merchandise. Most mustaches can’t stand because they don’t have legs. This mustache, however, does. It also has a keen business sense, which is why it’s selling merchandise.
The mustache is selling his merchandise so well that even the Shougun (しょう) notices. He leans down really close to the standing mustache man's merchandise and stays very still. Then he snaps his fingers and his servants come rushing out to buy it all!