C201 Serial Killer 3

After filling the reservoir with water, I threw it directly at Liu Feng. Liu Feng caught the bottle with a stunned expression and just as he opened his mouth, I said: "Take it back, I have use for this thing. You go back first, I still have things to do!"

"Oh, okay!" Liu Feng obediently left.

At this moment, I stared at the reservoir closely. The water had turned black in just a few days