I Guarded the Demon Realm for Ten Years and Married the Empress of the Demon Realm

Su Ming traveled through the fantasy world and became the third prince of the Chengyang Dynasty. Coinciding with the troubled times, Su Ming bound the sign-in system and was sent to guard the Demonic Territory. "Sign in successfully and get the Green Lotus Sword Technique!" "Sign in successfully and get the Burning World Ancient Umbrella!" "Sign in successfully and get Jiuyou Heart Flame!" Until one day, the Demon Emperor passed away and his successor, the Empress, came to the Demon Kingdom. "I will compete outside the city for a year. If anyone can beat me, I will marry him." For a time... Countless warriors flocked to the Demonic Territory. The empress of the demon world, whose cultivation reached the heavens, defeated all the heroes in Chengyang. The empress of the demon world, who believed she was invincible in the world, raised her troops to invade Chengyang after one year expired. Just after the gate of Demon Frontier was breached, a brilliant sword light lit up the sky in the city and headed straight for the empress. "Empress of the Demon Realm, do you still keep your promise?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.