Gao Wu, the Night Patrol Division, Patrols All Directions at Night with His Mace.

[No system + decisive killing + upgrade flow + grassroots counterattack] On the day he retired from the border, Liu Guanyi wanted to go home and cook for his mother. But as soon as he got off the train, he bumped into a demon and killed him in the street. An eighth-level rookie was chased by a fifth-level demon. He relied on a fruit knife and the strength he had honed over three years in the field to survive until the Night Watch Department rescued him. The Night Watch Division, the country's most powerful paranormal law enforcement agency, specializes in the infiltration of monsters at night. Those who can enter are either high-level martial arts geniuses or descendants of ancient martial arts. Liu Guanyi had nothing. But he has a brain dirtier than anyone else, and a pair of hands that never tremble. From then on, the city's darkness was under his control. The demon is going to cause trouble? Ask him first. The rules are dead, but he is alive! Whoever touches the people he protects will become dead.