Even after being split apart, each of the Six Sword Slaves possessed strength comparable to a Heaven-tier assassin.
This was because Dai Changsheng had taught them the Breathing Techniques from Demon Slayer: Kimetsu no Yaiba.
Breathing Techniques were cultivation methods that adjusted one's breathing rhythm to dramatically enhance the user's physical abilities. They did not conflict with the internal cultivation arts practiced by the Six Sword Slaves; instead, they complemented each other.
Perhaps the Six Sword Slaves did not possess talents equal to genius swordsmen like Gai Nie and Wei Zhuang, but they were no less gifted than the Hashira-level experts from Demon Slayer: Kimetsu no Yaiba.
Thus, not only did the Six Sword Slaves quickly master the Breathing Techniques, they also used them as a foundation to create exclusive Breathing Techniques better suited to themselves.
Once the Six Sword Slaves had fully mastered their Breathing Techniques, they would be capable of contending with Xuan Jian even in one-on-one combat.
Of course, this referred to Xuan Jian before he had mastered the Breathing Techniques!
This Seat Is Informing You ### Xuan Jian had already been stronger than the Six Sword Slaves. After learning the Breathing Techniques, he would only become even stronger than them, remaining Dai Changsheng's number one expert.
With Xuan Jian's current strength, if he encountered Gai Nie and Wei Zhuang again, even if the two joined forces, they would likely struggle to withstand a single move from him.
After mastering the Breathing Techniques, Xuan Jian's greatly increased strength also made him swell with arrogance. His madness flared up again, and he actually dared to challenge Dai Changsheng.
The outcome was naturally without the slightest surprise. Xuan Jian was utterly crushed by Dai Changsheng's absolute strength, then given a brutal beating that brought him back to his senses.