" Duan Feizhuo whispered to Z.

"Recite the correct spell. If you recite the wrong spell when opening the lock, it will trigger the counter-secret technique." Z said.

With a clang, the door lock opened. Xenophon put the key back in his pocket, put it aside, and asked Ms. Q to go first.

They lined up again in the same order as before, and descended the stairs.

Duan Feizhuo swallowed unconsciously. This is the dungeon used by the Night Watchmen to imprison the mystics. He'd never wanted to be here in his life, and he'd betrayed his purpose just to catch a glimpse of Jack the Ripper. Maybe Z is right, he just has a curiosity-seeking mentality.

The further you go underground, the damper and colder the air becomes. The floor was covered with dust, but there were no mouse footprints, and no cobwebs in the corners of the ceiling. Even spiders and mice would not come near this prison.

Suddenly, a mournful howl came from deep underground. Duan Feizhuo was terrified.

Z immediately put his arms around his shoulders, as if he was ready to do so.

Duan Feizhuo shrank into Z's arms.