After Guarding Kyushu for Three Hundred Years, I Am Now Invincible in the World

Ye Chen guarded Jiuzhou for three hundred years, but was ungratefully abandoned by the sect. When Ye Chen really left, the sect's crisis came step by step, and finally caused the demons to break through the seal and descend on Jiuzhou. When the sect truly realized Ye Chen's importance, it was too late. The sect was shattered and the demons came. In the end, only Ye Chen could truly quell the disaster.