As the most inconspicuous concubine in the Shangshu Mansion, Xu Qingjia's life creed is: don't fight, don't rob, and grow old in peace. Until the eldest sister cried and refused to marry, she was pushed out by the family and married to the legendary King of Zhenbei, Lu Xiao, who was said to be cruel and murderous. According to rumors, the King of Zhenbei was eight feet tall, with a green face and fangs, and the blood on his hands could form a river. Before getting married, Xu Qingjia hid the banknotes and prepared poison, planning to die with the evil ghost on the wedding night, at least with a clean conscience. The red candle flickered and the hijab was lifted. Xu Qingjia raised her tearful eyes, but the moment she saw the man's face clearly, the dagger fell to the ground with a clang. This... Wasn't this the dying, beautiful young man she pulled out from among the dead on the border battlefield three years ago? At that time, the boy was covered in injuries, but his wolf-like vigilant eyes were full of broken light. He grabbed the corner of her clothes and called her "sister" in a low voice. The man in front of him was tall, with sharp eyebrows and an imposing aura, but his eyes were exactly the same. Their eyes met, and the air froze. The frightened King of Zhenbei turned red at the base of his ears, his eyes evaded, and his voice was a little aggrieved: "You... Still recognize me?" Xu Qingjia: "..." Help, how come my weak Bai Yueguang, who can't take care of himself, has become a living king of hell who kills without blinking an eye? ! Later, everyone in the capital was waiting to see the joke about the concubine of the Shang Shufu, but they only waited until King Zhenbei washed her hands and made soup, cleared all obstacles for her, and lifted her to the clouds. And that seemingly accidental life-saving grace actually involved a huge conspiracy to subvert the imperial power.