He was born as a dragon, after 500 years of training to get a pair of crystal long horns, is the horned dragon; and after a thousand years of training to get a pair of wings, and finally became the Ying-long.
Ying-long is in the center of the five main parties, the five elements of the Secretary for the earth, the order of the wind and clouds and thunder, the force of a thousand pounds. After the emperor's favor, sealed as a general, the world chopped Chi You, Kwa Fu. Chi You, Kwa Fu both dead, should be the dragon also lost the power of God, unable to return to the heavenly realm, only to live in the South Pole. The sky world no longer should be ordered by the dragon wind and rain, the earth suffered from the pain of drought. In order to seek rain, people come up with strange tricks, pretending to be the Dragon's posture, but every time they get sweet rain.