Introduction;

Pivot is a morpheme with the form wood sound district (ōu). Pinyin: shū , district also epithet. The word "district" originally meant "a container filled with food", but it was changed to mean "a well-to-do family" (who regarded the house as a "container", and the food stored in the house as a "container", and the food stored in the house as a "container"). The food stored in the house is regarded as food in a container). "Wood" refers to "wooden doors". The combination of "mu" and "区" means "the gateway to a well-off house".