About ten thousand years ago, the Qianbeimen was then led by the Murong Ancestor's grandfather. Its strength was immeasurably greater than it is now, making it the strongest sect across more than a dozen realms. One could say it already ranked as a top-tier sect back then.
At that time, the grandfather's enemy, Tianjue, was cultivating in a dark forest at the border between the cultivation world and the demon realm.
Ultimately, after achieving the Mahamudra and finding the Qianbeimen, Tianjue erupted into an ultimate battle with the sect.
Chapter 993