Internal power and spiritual power are two different things.
It's rumored that when spiritual power is strong enough, it can kill easily without a trace. The Pupil Skill often spoken of in the Martial World is just one application of spiritual power.
When the Underground Brain Marrow employed the Soul Transfer Great Method, Shi Xiaole was suddenly pushed on the backfoot. This was because he had only learned one Pupil Skill - the Soul Transfer Great Method, and that too was a means of confusing the enemy, incapable of directly combating with spiritual power.
Boom Boom Boom.
Shi Xiaole's head was throbbing painfully, his mind seemed on the verge of shattering at any moment.
"Hmm, such strong spiritual force, exceeding my expectations! Lad, by yourself, you're just a mediocrity. Hand over your body to me, and I will allow you to reach the pinnacle of martial arts, laughing at all the world's ups and downs."
