That day, Taishang Laojun was wandering in the Heavenly Palace when he saw a burst of lightning and thunder in the north. He stared and said, "The rainy day has not yet come. Who is casting a spell to make it rain?"
The boy who followed hurriedly replied: "This is the young prince of the Dragon King of Beihai who is intensifying his practice of making rain. The old Dragon King is getting worse and worse. I am afraid that the young prince will take over this class in the future."
Lao Jun nodded, "It looks like there is only thunder but no rain here, so you still need to practice more frequently."
Intention: