C310 Shadow Break Evil Corrosion

"Shadow Break, Evil Corrosion."

The Four Profound Crystal, infused with spiritual force, soon emitted a burst of pure white light and ascended into the sky, forming a series of large characters.

Red Lotus Old Taoist gazed at the characters, puzzled. What did the 'shadow' refer to? Who was the 'evil' one? And what was meant by 'corrosion'? Despite identifying several questions