The Ten Thousand Profound Demon Ancestor was the widely recognized number one expert in the Great Zhou Demon Country, and the fourth strongest in the world. In a one-on-one fight, not a single Martial Saint from the Great Zhou Royal Family was his match.
Yet the Ten Thousand Profound Demon Sect remained docile and willingly subordinate to the Great Zhou Royal Family, precisely because the Royal Family commanded the Three Great Iron Armies. The Imperial Army, in particular, was incomparably fierce and had the power to surround and kill even the Ten Thousand Profound Demon Ancestor.
