Song Jian's Octagonal Han Sword, which he had taken from the underground ring, had just been casually wiped down. A small bloodstain on the blade was hard to notice unless you took a close look at it.
Furthermore, after being aired overnight, it didn't smell of blood. However, the fact that the officer managed to pick up on it caught Song Jian off guard.
Upon hearing the male officer, the female policewoman who was about to follow Song Jian out also immediately became alert, and stepped backward, gripping her waist, ready to pull out her gun.
Startled, Song Jian's initial instinct was to resist, but his rationality won out. Just as he was thinking of making up a believable excuse, a shout from outside suddenly rang through, "Freeze, don't run!"