Before he died, the farmer called his son to his side and asked him: "Now the cows on the ranch complain about the heavy work, the pigs complain about the poor food, and the chickens complain about the poor living environment. What are you going to do?"

The son replied: "Reduce the workload of the cows, improve the food of the pigs, and improve the living environment of the chickens."

The landlord said: "You are wrong. Tell them there are wolves outside. The evil wolves are still determined to kill me.