Normal people don't suddenly go insane, and since arriving here, players have been very careful with their food, either eating what they brought themselves or thoroughly testing any food bought from outside, so there's no possibility of poisoning.
But the unclear state of mind of the player in front of them was a bit chilling; even avoiding the currently known triggers for disappearance, they couldn't fully escape the influence of the instance, and they didn't even know where this influence was coming from.
"It's the decorative patterns in the hotel," Liu Shiyen said with a grave expression. "Those patterns have a psychological suggestive effect."
Many players knew this. Even if they didn't understand when they first arrived, after living there for a couple of days, they had figured it out.