In the first realm of the ninth grade Lotus realm, one had to study a Buddhist sutra. If one couldn't understand the Buddhist sutra, then it was very likely that one would suffer from Qi deviation. It was because of this that Zhao Hai thought that this was a technique that was more like a Buddhist technique than Buddhist techniques.
After studying the evil Buddha's lotus flower body in detail, Zhao Hai finally understood why the evil Buddha's lotus flower body had to be cultivated with the Buddhist scriptures. The evil Buddha's lotus flower body had to absorb a large amount of blood for cultivation, and the more blood one absorbed, the more hostile one would become. This hostile aura would make one more bloodthirsty. If the Buddhist scriptures were not used to resolve this hostile aura, one would eventually go into Qi deviation. Even if one did not die from the demonic fire, one would still become a murderous maniac.