Actually, when Sun Wukong first laid eyes on this Sun Wukong who looked exactly like himself, his Fire Eyes Golden Gaze had already seen through some of it. It was just that the scene was so astonishing that Sun Wukong couldn't understand it for a moment. Therefore, Sun Wukong decided to play along, pretending that his Fire Eyes Golden Gaze could not penetrate the true identity of this person and made a ruckus with this false Sun Wukong.
But later on, as he was fighting with this fake version of himself, a thought suddenly flashed through Sun Wukong's mind, so he quickly led this fake Sun Wukong to the Netherworld to meet with Ksitigarbha Bodhisattva. When the divine beast Di Ting, sitting under Ksitigarbha's throne, was discerning the true from the false, Sun Wukong's Divine Sense stirred, and he suddenly activated his Fire Eyes Golden Gaze. What he saw was that this imposter, transformed into his likeness, had turned back into the Six-Eared Macaque?
