1. It is a metaphor for deceiving oneself and trying to cover up things that cannot be covered up. This story tells us that everything in the world is objective, and if we don't face up to the objective reality, we will eat our own bitter fruit.

2. The ringing of the bell is objective, whether you cover your ears or not, it is going to ring. Whatever is to exist objectively, it will not change according to one's subjective will. Some people are not favorable to their own, or do not like the objective existence of the attitude of non-recognition, thinking that so, it does not exist, which is the same as "cover your ears and steal the bell", are extreme subjective idealism - egotism performance.