Demons are boundless.
This formidable enemy, in a past transcendental simulation, required Sun Wukong to draw upon the power of another realm in order to be defeated. However, the Wukong of today has returned from his trial in another realm and naturally no longer considers it a threat.
It's just that the fiend has always been thinking of re-emerging in the Three Realms, and since a strand of his primordial spirit has gone to another realm, it cannot be detected until it descends again, and Wukong is also unable to find out which celestial world it has gone to.
But to wait passively is not Wukong's style.
Moreover, he has assimilated the remnant primordial spirit that Moluo left within the Three Realms. There might be unpredictable circumstances.
The main-world simulation of the Heavenly Dao Life Simulator no longer serves any purpose for Wukong, as he himself can also project the future from the Heavenly Dao of this world.