Those normal Enhancer of Red have strength at the level of a normal Ability user. As it was known all ability users have enhanced strength more than the normal human.
Those at that level, whether they learn Martial Arts or not, are called Warriors. Because they have adaptability that all enhancers have.
If Warriors began using any Cultivation Technique preferably Cultivation Engine, then the Heart Engine will forcefully attract that none existent wisp of Red Energy to their heart, using the process of cultivation and turn it into a white mist that nurtures the body.
From that moment, the Warrior has become a Square. The advantage is his body will be nurtured until his strength surpasses his past self.
Not only that, the more the body nurtures itself, the more Red Energy increases in the body. Until the energy no longer increases after being nurtured. That is when his body reaches its limits.