It seem we need 9 persons to solve that mystery.
In the second room there is 9 poison tiles and when you enter it say. The room need to be purified more. After lot of search I found out that putting a campfire on the poison removed it completely and a yellow message appear. But since I can’t put 9 campfires I can’t solve that mystery.
I play on Klapedia server Team name: Cassiopeia and I really wish to find 9 persons who want to try this thanks!