Strange Gems 

The silver metallic door that Rhea had pointed out is different from all the doors we have broken so far or seen in the manor's rooms. It is metallic, while the door of all the other rooms is wooden. 

Which means it is different than other rooms. It might contain the great treasures as Rhea is hoping, or it might contain something that is totally useless to us, or the worst, it might be empty like that room on the first floor.

The design on its doors was quite strange, and we had thought it might contain something unique, but we have found it empty. I hope something like that would not happen with this room; it would be a huge time waste.

"Sure," 

I said, and my eyes lit up as they scanned the formation, and the next second, a surprise couldn't help but lit up in my eyes as I found the formation is quite difficult. It is on the same level as the one on the manor gate.