The Immortal Path has three Tao Lineages: Taiqing, Yuqing, and Shangqing; the Buddhist Path has the Tathagata, Bodhisattva, and Vidyaraja as its three origins; and within the Demon Path, there are also divisions.
According to the intelligence Xu Yang had gathered over the years, the Devil Race of the Ten Thousand Demon Abyss revered the Four Great Heavenly Demons, namely the Great Freedom Heaven Demon, the Great Desire Color Heaven Demon, the Great Brahmanic Heavenly Demon, and the Great Brahma Heavenly Demon.
The Blood Sea Asura worshipped the Great Freedom Heaven Demon led by the Great Freedom Sky Demon King Bo Xun, featuring four Great Asura Kings and numerous Asura Kings, who ascended through killing, extremely fierce and evil.
Now, Xu Yang found himself in this towering Blood Sea, witnessing the monumental statues of four "Great Asura Kings."