"Since that's the case, I can only use the Spirit Secret Technique." Mu Rufeng sighed.
His strength was insufficient, so now, he could only forcefully use the Spirit Secret Technique, also known as the Other Shore Fist.
Although he knew other spiritual secret techniques, their effects were too poor, and it would be difficult to kill these people.
But the Other Shore Fist was different; its destructive power was immense, though it consumed a lot as well.
Mu Rufeng could forcefully use it now, but doing so would cause significant aftereffects.
The most obvious consequence was that his spirit would suffer severe damage and be weakened for a period.
Of course, Mu Rufeng's soul power was strong, so his recovery speed was bound to be quick.
Today, these black-armored men came for him, and if he didn't deal with them now, it would be troublesome if they returned in the future.
Moreover, most importantly, killing a black-armored man could increase his upper limit forces.
