When the Four Immortal-Slaying Swords first appeared in the Primordial World, they killed two beings who had once reached the Hunyuan Taiji Daluo Golden Immortal Realm.
At the time, those two were cultivators at the very pinnacle of the first tier of the primordial origin golden immortal realm.
And furthermore.
Just as that old schemer Hongjun had created the Three Corpses Secret Art, giving one person the combat strength of four first-tier primordial origin golden immortals.
Although those avatars could never actually reach the first tier of primordial origin golden immortals, they were at least second-tier existences!
And the Yin-Yang Ancestor of that time had once been the Yin-Yang God-Demon, an early-stage limitless primordial Daluo golden immortal!
How could he possibly have lacked a few secret arts?
After all, Hongjun, the Justice God-Demon who had struggled to adapt to the rules of Chaos back then, had only been in the Hunyuan Taiji Daluo Golden Immortal Realm.
How much more formidable, then, was Yin-Yang?
Although the Yin-Yang God-Demon had struggled somewhat to adapt to the Primordial World's rules.
He was still a former mighty figure, after all.
Xu Tong had specifically gathered cultivators in the Daluo golden immortal realm who excelled at tracing hidden clues and looking back through time to form a department.
The Primordial History Inspection Bureau.
As for the era of the War of the Witch and Demon Tribes, the highest-ranking leaders of both sides were now available.
Di Jun, the Heavenly Emperor of the Demon Tribe Heavenly Court back then and the foremost leader of the Demon Tribe's government in the Primordial World, had already been resurrected.
And there was also the Demon Tribe's foremost Great Sage, through whose hands all the broad strategic plans involving the entire Demon Tribe and Witch Clan had passed.
Lord Bai