This fable warns people not to be complacent about a single point of view, let alone a single achievement. The main meaning of this story is not to show the cleverness of the fox, but to expose its cunning. It is pointed out that some bad guys always find a force to bully good people and do bad things, and put up signs to hide their eyes and ears. Good people should learn to see through this deception. Anyone who uses the power of his position to oppress others, or uses the power of his position to bully others, can be described as "Smith".
This idiom means to bully and scare people by relying on others' strength.