The winner advances, the loser returns to their original world, and their simulator will have some restrictions added.
For example, Sun Wukong's Heavenly Dao Life Simulator had been upgraded to extract items. If he were to lose to someone else, it is highly likely that the function to extract simulated items would disappear.
Although Sun Wukong didn't really need this feature, after all, by just closely reviewing the process, he could perceive a lot on his own, without needing the simulator to provide it.
But what is the purpose of "simulation"?
Entertainment?
Or selection?
Sun Wukong didn't know, but he had already decided to participate. After all, he had left a clone at Huaguo Mountain that was equally powerful and wouldn't let anything go wrong.