The longest wait of the millennium

After being betrayed by his Shifu and becoming the Great scarlet devil, the "hunting dog" of the Yuèliàng sect, Liang Xing was sealed away at the end of the great war by the joining of the three great sects, with the pretense that his eternal prison was unbreakable and that everyone was safe from his grip.

But what would happen if the unbreakable seal was broken?