Audacity
Sacrum had formed Visualizations, even the people of the True Martial World had to use proxies to exercise power with their souls. The Magus Sky God, for example, had formed all sorts of methods to solidify and give life to Spiritual Qi, many of which Ryu had benefited from.
These were all absolutely ingenious methods, and they were worthy of respect… But what if the Heavens were looking down in disappointment from the very beginning? What if they had been born with such a method hidden in their bodies all the while?
It made sense that this was never found. The connections between the Lungs, Heart, and the various detoxifying and energy refining organs were just veins. They could be easily mistaken as the circulation routes of the Body Realm, in fact they might even be assumed to be absolutely useless.