The investigation made a major breakthrough. That morning Shen Ye returned from scouting with an expression graver than usual. He pulled Lu Xingchen aside and lowered his voice. "I've confirmed it. Shen Ming built a secret laboratory in an abandoned mine outside the capital, dedicated to researching forbidden light spirit arts. He wants to use the blood of light spirit wielders to break the seal on the Spirit Vein Sanctum—where the power of the light and shadow ancestors from ancient times is ...