"It's even more corrosive. Not only did it stop any plant from growing in the soil for more than four years, it even made it poisonous, too. I remember that the City Hunters were here to investigate someone being poisoned. I can't tell if these two are related. We need more clues, but the Black Vatican is hiding in the dark with a great disguise. There are around two thousand people in this manor. We'll need more information to identify them among the others," said Lingling sternly.