为了渲染了家庭的窘迫，作者也介绍了一个“永远不会有信投进去”的信箱和“

In order to render the family's distress, the authors also introduced a "never have cast into the letter," the letter box and bell, trying to describe the details of a few pens "devil can take it rang" and these complement each other and the mirror combine to make us a better understanding of the economic conditions hero.

In order to render the family's distress, the author also introduced a "never believe in" letter box and "ghost can ring it" bell, is trying a few details, these complement and mirror combined to make us more aware of the hero's economic conditions.

In order to exaggerate the embarrassment of the family, the author also introduces a mailbox that "there will never be a letter put in" and an electric bell that "ghosts can ring it". He is trying to describe a few details, which are combined with the mirror to better understand the economic conditions of the protagonist.