The Dark Demon Sword had originally been a peak Heaven-grade sword. After absorbing the wild Ice Sword Spirit inside Mu Ziqing, it had evolved into a Low-grade Spirit Weapon.
Yet, in the Boundless Realm, a Low-grade Spirit Weapon was clearly no longer sufficient.
Had it not been for Ye Qiubai's physique, cultivation method, and Sword Intent to support him, using a Low-grade Spirit Weapon like the Dark Demon Sword would have put him at a massive disadvantage when facing cultivators of equal strength.
Chapter 144