Insects that eat grass on the ground envy insects flying in the sky, grow wings and fly, but are finally entangled in cobwebs; Tired of building nests, the birds in the tree thought that the pond should be a good place to go, so they went into the water and gave birth to two shells to tie themselves up, and they didn't know when they would be free again. Who is right or wrong about these two animals? Let's laugh it off. Fortunately, I'll have a drink with you before I change my life. I hope you don't refuse.