Qi Blood Martial Arts was developed by the Human Race to survive in a dangerous world filled with fierce beasts, and over time, it evolved into the most suitable cultivation path for humans.
Yet it was this path, so fitting for human cultivation, that the Spirit Clan and the Demon Clan—races almost entirely different from humans—were also practicing.
This situation was clearly not normal, but no one pursued the matter further, or rather, even if someone did, they failed to produce any results.
After all, it was very difficult to perceive the essence of things when power was restricted.
For instance, the Spirit Origin—if one's strength was insufficient and one's spiritual power was not strong enough, it was impossible to see it, let alone study and derive any results from it.
