If it weren't for reaching a dead end, Ye Xuan would never want to seek him out, because the Eternal Shadow is too terrifying, his identity too mysterious, and his cultivation can be termed Chaos Invincible.
The so-called forbidden technique, is not tolerated in chaos, one can imagine how terrifying it is. Moreover, the initial contact made Ye Xuan understand that in the other's eyes, he was just a pawn, a pawn that might be used.
Although the Eternal Shadow has transmitted two Forbidden Techniques to him, this doesn't mean their relationship is good; it's merely an exploitation, which Ye Xuan fully understands.
In the battle of the Supreme back then, he killed the Lord of Extreme Demon using the Future Transformation Technique, a technique with great limitations, needing perfect timing and synergy to perform.
