The acquisition of the "Book of Dead Spirit (Leg Manuscript)" took Han Dong's stealth skills to a higher level.
Maritzis transformed into a Toad Pearl, which Han Dong swallowed, thereby enhancing his spatial affinity.
The "Faceless Disguise" allowed him to pose as an instructor of the Thorn Meeting. Unless someone brought out a church roster for comparison, it would be difficult to see through Han Dong's disguise.
Nighttime.
Han Dong quickly approached the side of the church.
Taking advantage of the architectural breach caused by the self-destruction of "Thorn Corpse," he swiftly infiltrated the church interior, disguising himself as an instructor countering invaders and using the "Demon Eye" to search for the secret door leading to the underground area.
While everyone's attention was focused on the sacred beast.
"Void Toad Step"
With a burst of starry light beneath his feet, Han Dong had passed through the concealed secret door.