As night fell, the city became more lively, but the busy areas during the day gradually quieted down.
In this world, there were always some things that needed to be carried out at night, because the night was the most natural means of cover.
Tang Zhen was wearing a black combat suit as he came to the back of the building and walked to a tightly shut iron door.
This was one of the building's fire exits. It would be locked at night and no one was allowed to enter or leave.
After using the [ universal electronic kit ] to fix the image displayed by the surveillance camera, Zhen Tang took out the purple electric dagger and cut open the lock of the iron door.
Gently pushing open the metal door, Tang Zhen walked into the stairs behind the door and started to move upwards.
He walked to the 30th floor unhurriedly and reached the end of the stairs. Tang Zhen opened the fire safety door of the stairs.
