This was the Grand Bodhisattva’s treasure.
He did not tell anyone about the secret, fearing that the many cooks would spoil the broth and they would break it.
Another thing was that after he possessed that key, he could control everything here, including... that Pool of Afterlife in the middle of the shrine.
In other words, Shelly’s earlier deduction was wrong.
The others would be cleared out in three days, but not him.
In that case, he did not have to be anxious.
He immediately acted and