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After cleaning up the bodies, Su Lun took out a test tube filled with green potion and dropped a few drops onto each pool of fresh blood.
This was the potion commonly used by the Old Lington gang to destroy bodies and erase traces—[Blood-Dissolving Bacteria].
As soon as the potion landed, the bright red blood was quickly devoured by the bacteria, the liquid changing from red to fluorescent green before evaporating in the blink of an eye.
The last traces of the bodies were also erased.
Although there were still some bloodstains splattered on the walls, it was not a big issue.
Even if someone noticed, they would not go to great lengths over the "disappearance" of a few gang members.
Having killed several people, neither Su Lun nor Mr. Jing showed any sign of disturbance. They strolled leisurely in the alley, then switched to another passage and re-emerged onto the main street.