Supreme Demented Demon Fist was a secret art passed down within the lineage of the Gazing River Sect. It was never made known to outsiders, and once executed, one's strength would instantaneously rise by a small cultivation realm for a short period of time. However, one's original cultivation would suffer a sharp fall afterward.
It wasn't easy for Bi Jianghai to reach Consonant Spirit realm. If his cultivation were to regress due to this duel, not only it be a pity for Bi Jianghai, it would be a huge loss to the Gazing River Sect as well.
One must know that of the twenty-eight powers in the surroundings, the number of Consonant Spirit realm experts was truly limited. At the very least, it numbered below one hundred.
Not to mention, there was only a total of five of them in Gazing River Sect. An additional one to the lineup could bolster their forces significantly, deterring their enemies while elevating their position.