"This Horse Guard is such a lowly position! How dare the Jade Emperor humiliate me like this! Think about King Yama of the Netherworld, and the Four Seas Dragon Kings, who wouldn't treat me with the utmost respect? Yet, this Jade Emperor does this to me!"
"How can I, Old Sun, endure such humiliation? I, Old Sun, am leaving!"
After spending some time in the Celestial Court, Sun Wukong came to realize that the position of Horse Guard was truly lowly. In a fit of rage, he left the heavens.
Once Sun Wukong descended to the Lower Realm, and after some 'bull companions and Jiao friends' persuaded him, he proclaimed himself Qitian Sage.
After learning of this, the Jade Emperor felt perplexed and sent Taibai Jinxing to the mortal world to inquire why Sun Wukong had done such a thing.
Taibai Jinxing went down to the mortal realm and inquired.
