The surviving sect members had to move from the location where their sect was located because they no longer had the strength to retain it and thus could only move to one of the most outskirt branches they had that still remained loyal to the sect as most branches immediately turned and renamed themselves as new sects the moment they heard what happened to the Main branch.
Despite countless years passing by, the sect was never able to regain its former glory and has just been stuck as a rank 4 sect which in part is due to missing the two cannons of their legacy art; The elegy of the enduring still mountain and river of piety cultivation art. It was a gold-grade art, it was rumored to have been created by a grieving son to honor the wishes of his mother to live a long and healthy life. He created that art to honor that wish. The art was aimed at strengthening one's heart, mind, and body to ensure longevity in all circumstances.