Martial artists who reach a high level of proficiency are able to channel the thick Inner Qi from their Dantian through swords and knives, creating sharp sword Qi or knife Qi, thereby enhancing their weapons' lethality and exponentially increasing their killing power.
However, this is extremely difficult to achieve.
Even these top-tier assassins couldn't manage to do it!
They rely on the quality of their weapons to release the knife Qi.
The material of the daggers is extraordinary.
From the color, luster, and the deep chill they emitted, Shen Zhou could tell that it was Cold Iron.
Cold Iron refers to iron ore buried deep underground in extremely cold places.
After tens or even hundreds of thousands of years of being permeated by icy coldness, it becomes exceptionally hard and highly conductive, amplifying the effect of inner strength.
With ordinary weapons, channeling 100% of one's power might only yield 70 to 80% in effect.