Perhaps it really could be done with the system. But then again, whether it was Falcon Fist or Emotionless Intent Sword, neither dug any less deeply into the body than the blood-and-qi circulation of this world. From another perspective, someone who had reached Great Completion of Fist Law could achieve an astonishing degree of control over their own body.
They could control every part of their body, their organs, every inch of muscle, and their bones.
If his mental focus continued growing more refined, could he control things at the cellular level?
Though there was no qi, the rapid contraction and expansion of the heart driving blood circulation, combined with the exchange of breath inside and outside the body, could unleash no weak force.
That was a line of thought!
Lu Ren's mind suddenly cleared. Even if he could not cultivate, that did not stop him from drawing upon these things to strengthen his own foundation.
And this martial arts manual...
Lu Ren put it into his backpack. Hua Country had a Martial Arts Research Institute dedicated to studying human science. If he took it there, perhaps they really could develop a blood-and-qi circulation technique and apply it to themselves.
That was the power of having a team behind him. What was more, behind Lu Ren stood an entire nation.
This encounter also dispelled Lu Ren's desire to visit South Mountain Fist School. Seeing one part revealed the whole. Rather than waste time and effort searching everywhere for martial arts manuals from this world, he might as well steadily practice his fist techniques and swordsmanship.
"What a pity..."
Lu Ren somewhat regretted throwing away the corpses of the male and female Twin Devils. If he had taken the time to dissect them, he might have discovered a clue or two.