"Why is Chai Men depressed? The fox and rabbit fly in my room" comes from which poem?

"Why is Chai Men depressed and foxes and rabbits are flying in my space?"

Chai Men is simple and miserable, swaying in the sea breeze, and foxes and rabbits seem to fly from the eaves, like flying from the sky. Through the profile description of foxes and rabbits, it reflects the barbarity of people's living environment and their fears and sorrows.