The black-clad man walked into the building of the residential area and entered room 606 on the sixth floor.
Li Tong, Song Ziya, and others were closely monitoring the black-clad man's every move through surveillance, avoiding the installation of bugs in the black-clad man's room to not alert him.
This precaution was for safety, as tampering with the black-clad man's hideout could easily raise suspicion.
Li Tong trusted his people's competence, believing they wouldn't leave any traces, but even moving a single object in the room could lead to the failure of the operation, so to be cautious, they hadn't entered the black-clad man's room.
What Li Tong didn't know was that his painstaking ambush had already alerted the black-clad man to something amiss.
After carefully scanning all the items in his hideout, the black-clad man slightly relaxed, then entered the restroom.
After moving the toilet aside, a hole appeared on the floor, barely large enough for a person to pass through.
