After Sun Wukong had his original spine removed, Yang Jian secretly encouraged the gods in the heavens to start a large-scale battle because they coveted the spine, which contained Wukong's lifelong cultivation. During the war, Jin Chanzi died fighting to prevent the spread of war and protect the order of the three realms. The demonic energy outside the reincarnation took the opportunity to invade the heaven and the lower realm. Yang Jian gradually sank under the erosion of the demonic energy, was completely demonized, and became a puppet of the demonic energy. At the last moment of being demonized, Yang Jian exhausted his remaining divine power and left a secret message to the Black Bear Spirit, the Yellow Wind Monarch, the Yellow Eyebrow King, the Centipede Spirit, and the Bull Demon King in the lower world, instructing the five people to pick up Sun Wukong, who was bound by the mechanical prosthetic body, to help him find the original spine and prevent the catastrophe of the demonic energy.
