Advancing without an equal soul and void saturation rate was no different from suicide.
Once they began to fortify the void energy in their body, it could explode from an overflow of energy.
Fortifying the body was like quenching a piece of iron; one had to fold it repeatedly until it gained density.
Essentially, one had to turn the void energy in their body denser, like turning water into a heavy liquid or even metal.
Without the seal from soul saturation, the excess energy, unprotected, would splash, causing explosions in the body.
Thus, if one wanted to advance to a higher realm, void and soul saturation must be equal.
As Nash began cooking for their celebration, his teammate started discussing their future.
"What do we do after this, boss? Do we go to another similar danger zone to accumulate money or head straight into a yellow-level danger zone?"
Feeling the limits of their strength, no matter how hard they trained, they couldn't seem to catch up to Nash.
