BOOM!!!
The dark light collided with the vast light shield, immediately generating a massive rumble.
The earthy-colored light shield was shaking continuously like a rolling earth dragon, layer by layer weakening the powerful force.
Zhou Yuanli and Liu Qiang exchanged glances, they voiced somberly: "Ninth Level Qi Refinement!"
The Qi Refinement Realm was divided into three stages: early, middle, and late.
Every stage was clearly delineated from the others.
If we ignore the Divine Soul Foundation, meridians, acupoints, and body strength, which can be regarded as dispensable for lower order cultivators.
Then the quantity of Spirit Power in one's body would be the best differentiation standard.
An early-stage cultivator could not cast techniques many times and could only use mostly one magic tool, typically of lower grade.
By the middle stage, the Spirit Power multiplies several times, and everything begins to change.