"Worm" is interpreted as a "local expert" in Beijing's hutongs. In the "Beijing Local Language Dictionary" compiled by Mr. Xu Shirong, the specific meaning is: "metaphor refers to an expert who has professional knowledge and knows everything in detail." Then there are the following: "room bugs," "buying and selling bugs," "antique bugs," "ticket bugs," and so on. "Worm" is the best example of all kinds of social secrets at the end of the century in China, and it is also a vivid expression of the mysteries of the Chinese people's living conditions and personalities.
