Tianlao Sign-In: Obtain the Heavenly Demon Holy Body at the Beginning

Lin Xuan traveled through the fantasy world and became the deposed prince of the Great Xia Dynasty. But he was framed, his cultivation was abolished, and he was thrown into the sky prison. It is rumored that countless monsters are suppressed inside the Tianlao, and there is even an ancient monster. The entire Tianlao was full of demonic energy. Lin Xuan was about to be possessed by demonic energy and died suddenly in the prison. At the critical moment, Lin Xuan activated the god-level sign-in system. "Ding, the sign-in is successful. Congratulations to the host for obtaining the Holy Body of the Demon!" "Ding! The sign-in is successful. Congratulations to the host for obtaining the god-level skill - Heavenly Demon God's Thunder Technique!" "Ding! The sign-in is successful. Congratulations to the host for obtaining the heaven-level magic weapon - the Red Demon Sword!" … Many years later, countless armies of demons suddenly emerged from the prison. Emperor Xia: "Could it be that an ancient demon is about to be born?" Guard: "No... That's His Royal Highness the Third Prince!" After Lin Xuan was born, he realized that he was invincible! The demonic body is here! All demons come out!