There was hole in the wall!
Xia Feng used simple sealing technique from the past that only relied on the qi itself. It was weak and sooner or later, it would break by itself, revealing the tunnel to somewhere. Although Xia Feng couldn't know the main reason behind this tunnel, he had roughly guessed the intention behind it!
Use the other's qi veins for themselves!
"The former family behind this was quite cunning one. Don't you think so, Zexi?"
"Mhmnmnn~~ Yes, yes~~ You are right, My Feng~~"
The lady was rolling her tongue around the tip, not really listening to Xia Feng who was sitting with his eyes locked on the broken wall. One hand of his was ruffling the black hair of the public bath queen while other was actually taking care of the cat!