Legend has it that when the White Emperor's youngest daughter was three, she could easily break the black iron chains sealing the beast Zhang. Even the Heavenly Realm's mighty General of Thunder could not budge those chains, and the tale spread across the Five Realms. The beast Zhang had been imprisoned for a thousand years. It escaped across the Five Realms, harming countless living beings and leaving everyone in a state of panic. They begged the Heavenly Realm to send troops to capture it, and the Heavenly Emperor dispatched a hundred thousand heavenly soldiers, yet they still failed to seize the vicious beast. But when this little monster called out to it, Zhang obediently lay down before her. Later, they say, Zhang gave her a gentle bite, and when she said it hurt, she kicked it so hard its soul was obliterated... From then on, the Five Realms were even more terrified.
Yet no one expected that one day this ferocious little girl would willingly descend to the mortal realm to undergo a tribulation. The immortals gathered to watch, wondering what sort of mighty being had managed to tame this little demon.