The air conditioner said again; "Our combination can make the host cooler."
The fan said: "Yes, our combination can make the host cooler."
After a while, the master came. He thought, "It's very hot today. You should turn on the air conditioner or fan the wind. " He thought, "The air conditioner is cooler than the fan." So he turned on the air conditioner.
The air conditioner proudly said, "It seems that I am the most popular."
The fan added: "You said we should combine to make the host cooler, so I won't tell you." The air conditioner quickly said, "Sorry, it won't happen next time." They became good friends again.