Why were farmers laughed at by Song people?

The farmer was laughed at by the Song people because it was an accident that the rabbit was crushed to death on the stump, but the farmer hoped that this accident would happen every day. According to relevant public information, the farmer was ridiculed by the Song people as an idiom waiting for him. It's about a farmer who saw a rabbit killed in a tree in the Spring and Autumn Period, then gave up his job and waited for the rabbit to hit the tree every day, which means that he was lucky and got something for nothing. Now it is also a metaphor for sticking to a narrow experience and not knowing how to change it.