Although the warehouse had been badly damaged due to the previous battle, and had been bombarded by the Heavenly Thunder summoned by Li Zhixia, it was still easy to locate the entrance to the underground section of the warehouse.
"There is a Concealment Formation here. The method used to create it is very clever. Even I would have difficulty noticing it if I didn't know it was here beforehand."
While going through the entrance, An Zichun carefully looked at the magical symbols painted on the stone walls and made this remark.
Of course, this is also the reason why Mu Yao and Sang Liren had not detected anything unusual during their previous visits.
Below the entrance is a flight of steps that leads down about ten meters deep underground, opening up into a space even larger than the warehouse above.