Following the clue of the paper donkey and Lan Caihe telling the truth, the immortals finally decided that the enemy in front of them was Prince Hualong, a veritable Zhang Guolao. Of course, Hualong refused to accept it. Because Hualong, who has always been filial to his father, really can't bear to turn against each other.
This secret was finally known to the Dragon King of the East China Sea. For his own benefit, the Dragon King of the East China Sea waited for an opportunity to trap and kill Hua Long. Fortunately, Xiao Xin was desperate to save him. Just as Hua Long's life was hanging by a thread, all the immortals appeared and tried their best to save him. Hua Long finally realized that Zhang Guo made a determined sacrifice to help the Eight Immortals and save all beings, and let the Yuan God of Hua Long take over in the face of Zhang Guo.