Containing monsters? Call me 749 the God of Slaughter!

Li Haotian transmigrated to another world. He discovered that countless monsters lurked in the shadows of this world! In a moment of crisis, Li Haotian awakened the [God of Slaughter System] and joined Bureau 749, a unit dedicated to dealing with these monsters. Bureau 749's mission was containment and research, but Li Haotian's system worked in the opposite direction: only by killing monsters could he become stronger! ...While his teammates were busy setting up containment devices, Li Haotian drew his sword and slashed! When the professor pointed at the thousand-year-old zombie and said, "We must capture it alive for research," Li Haotian shot it in the head! When the international organization roared, "This is a valuable sample," Li Haotian burned it to ashes! ...Everyone cursed Li Haotian as a madman, a butcher, an extremist. Until one day, the contained "harmless" monsters went berserk, devouring most of the base. Li Haotian walked through the ruins, a blood-dripping knife in hand, a cold smile on his face: "Now, does anyone still think containment is the right thing to do?"