Good words and sentences for jokes?

Happy new year! Good luck! Let me tell you a joke.

A young man invited the Zen master to tea to discuss Buddhism, and his words were quite complacent.

The Zen master took a cup full of stones and asked, "Is it full?"

The young man replied, "full."

The Zen master grabbed the sand and put it in and asked, "Is it full?"

The young man replied, "full."

The Zen master poured another glass of water and asked, "Do you understand?"

The young man said, "I see."

The Zen master thundered: "If you understand, don't serve. Dry to be full. What are you doing just drinking tea and pouring water for the mouse? "