Yuan Qing traveled to the prehistoric world and became the world tree Tongtian Jianmu. He discovered that he had taken root in the Buzhou Mountains and Yujing Mountain. As the prehistoric world's most powerful henchman, Yuan Qing naturally aspired to achieve great things. He set a small goal: to attain the Dao of Hunyuan before Hongjun. The first step was to intercept Hongjun's opportunity and create the Jade Disc.