The reason why the Imperial Sword Sect shared Ancient Sword Star with the Ancient Desolate Abyss was mainly due to the Abyssal Breath from the Ancient Desolate Abyss. It greatly weakened the disciples of the Imperial Sword Sect; once they entered the Ancient Desolate Abyss, their attributes would be directly weakened by 80%, making them weaker than even an ordinary person. Facing the Desolate Beasts, they had no power to strike even once.
For a long time, the Imperial Sword Sect could only be forced to defend themselves. They could only attack when the Desolate Beasts left the Ancient Desolate Abyss. If it hadn't been for the Demon Suppression Seal left by the Ancient Sword Sect, it was feared that the entire Ancient Sword Star would have already been eroded by the Ancient Desolate Abyss.