"Lu Chunqiu Self-knowledge": "People have clocks; Want to be negative; Then the clock is too big to be negative; Destroy it with vertebrae; The clock is ringing. I'm afraid people will smell it and take it away from me. Rub (cover) his ears. The wicked smell it; You can also; Evil has been heard; Yes. "
Stealing the bell means that the person who steals the bell is afraid of ringing the bell and blocks his ears, thinking that he can't hear it and that no one else can hear it. It is a metaphor for deceiving himself.