Choice
Though there were only three main divisions of qi in the martial world, the sub-levels hidden within were to the point of being infinite in quantity. What could be denoted as Mortal, Immortal, or Cosmic Qi was actually just a subgroup of energies that represented a certain quality. This was why Ryu was having a bit of an issue choosing his path. Without a master, he could only rely on his own intuition…
When choosing a Qi Technique, it was of the utmost importance to take into account one's meridians. Ryu was born with Chaotic Silk meridians, a substance known for being incredibly light, while simultaneously being the third strongest material in existence. An Ancestral Grade Meridian System like Ryu's gave him near infinite paths to chose from. It was no wonder he was struggling.