Buoyed by his first successful experience, Yu Fei felt a sudden explosion of inspiration.
The switchblade was actually quite simple. A clever mechanical structure allowed its blade to passively extend or retract. After being refined and purified by a Mechanic, the dagger's sharpness far exceeded that of its base materials. With its simple trigger mechanism, a successful hit could even break through the defenses of a third-realm Martial Artist and cause immense damage.
To put it simply, the dagger's armor-piercing effect was ridiculously strong. Yu Fei estimated that even a Martial Artist of the Qi Blood Realm with an Iron Body technique definitely couldn't withstand it.
However, it also had a fatal flaw: its ability to penetrate energy was very poor. As long as a Martial Artist defended themselves with their Qi Blood in advance, the dagger's lethality would be greatly diminished.
