Consuming innate substance again

When a warrior undergoes a unique change in their soul body or even state of mind, it can be said to be an enhancement in potential.

Generally one shouldn't expect there to be visions of heaven and earth.

These changes are just minor things and can't catch the attention of heaven and earth.

Martial artists have different temperaments and some are affected by the exercises they practice. 

Some seem to be aggressive, but this is due to the nature of the techniques being practiced. 

Most techniques are not perfect and thus end up affecting those that practice them greatly. 

This is the same for ice practitioners, their personalities tend to become cold as they practice the techniques to high levels. 

The Qi Codex, on the other hand, doesn't have any features thus Neutral. At the same time, it can be fixed to any other martial arts.