"How dare the four dragons bring rain without my permission!" The Jade Emperor was enraged, and ordered the heavenly generals and their troops to arrest the four dragons. Being far outnumbered, the four dragons could not defend themselves, and they were soon arrested and brought back to the heavenly palace.
"Go and get four mountains to lay upon them so that they can never escape!" The Jade Emperor ordered the Mountain God.
The Mountain God used his magic power to make four mountains fly there, whistling in the wind from afar, and pressed them down upon the four dragons.
Imprisoned as they were, they never regretted their actions. Determined to do good for the people forever, they turned themselves into four rivers, which flowed past high mountains and deep valleys, crossing the land from the west to the east and finally emptying into the sea. And so China's four great rivers were formed -- the Heilongjian (Black Dragon) in the far north, the Huanghe (Yellow River) in central China, the Changjiang (Yangtze, or Long River) farther south, and the Zhujiang (Pearl) in the very far south.