The beginning of Shen Zhiyi's life is almost as clear as one click. The former legitimate daughter of the Prime Minister was once reduced to the daughter of a criminal official and was expelled from the Jiaofang Division. She thought this was the end of her life, until she met the palace maid, A Yue, who looked exactly like the late Princess Anyang. A bold plan took shape in her mind. She taught Ah Yue poetry and songs, taught her family etiquette, taught her how to imitate the innocence and coquettishness of Princess Anyang, and sent her to the dragon bed step by step, becoming the "white moonlight substitute" in the heart of the emperor. Shen Zhiyi hid behind the scenes, strategizing, just to borrow the sword of "Princess Anyang" to avenge the family and bring down the enemies one by one. Ah Yue's life started in hell mode. After ten years of being invisible in the palace, being beaten and scolded was a common occurrence, and her biggest wish was to save enough money to leave the palace. Until she met Shen Zhiyi. The sinner's daughter, who was as cold as frost and snow, gave her a bet with no future in sight. She agreed. She imitated the appearance of another woman, showing a smile in front of the king, and walking in the harem with swords and swords at every step. Everyone said that she was the shadow of Princess Anyang, but only she knew who she was. What she wants is more than just surviving. They are each other's only pawns and only allies. Shen Zhiyi: "Remember, the only one you love is His Majesty, and your innocence cannot be half false." Ah Yue: "I see. What about you? You hide in the shadows and plot people's hearts, aren't you afraid that you will never get out?" The palace walls are towering, and people's hearts are treacherous. One is in the light and the other is in the dark. They use the world as a chessboard,