Amon explained examining Yang Chen's strength.
Usually, and that went for even the monstrous of monstrous genius—they would usually focus on cultivating one energy. That said, if one searched the world, one would no doubt find practitioners practising both soul and battle energy.
However, cases like that are as rare as qilin's horn. The reason for that was because just cultivating one energy was extremely difficult, if one cultivated another energy on top, their progress would no doubt come to an extreme crawl.
And on top of that, one also needed sufficient talent, luck and opportunity just to be able to practice one energy. As such, who would have the time to practice both?
Yang Chen was only able to cultivate soul energy because he had an uncanny talent for it. Furthermore, he also had the aid of the system which managed the battle energy cultivation for him.
Thus the two energies never repelled or clashed against each other.
