The blade is not completely undetectable; if you are careful, you can hear the sound of it slicing through the air.
However, he gradually realized something was off. The assassin before him seemed unfazed by pain, clearly with physical prowess inferior to his, yet employing a fight-to-the-death strategy, trading punches one for one, and if that wasn't successful, then two for one!
And no longer using that invisible blade!
In the blink of an eye, the only constant was the distance between their attacks, and Qing Chen's cold eyes!
This was a lesson Qing Chen learned in the Octagon cage.
Don't be afraid; look at your prey.
Tell the opponent, you're the Hunter!
At this moment, continuous streams of rats emerged from the sewers, rushing towards Qing Chen like a flood, while pedestrians frantically fled.
But these rats couldn't get close to Qing Chen at all; they kept trying to leap onto him, but his fast-moving figure repelled them like a magnetic field, bouncing them all away!
