She is the daughter of a guilty minister, and when she enters the palace, she becomes Princess Yu's substitute. I had to kneel down and copy the etiquette every day, my fingernails were split, my monthly routine was detained, and even the newly cut clothes had to be sent to the owner first. That night, the owner slapped her in public just because she looked at King Yu one more time. Shen Hengzhi bit her lip, but her eyes lit up - she found that she had never forgotten anything. The ancient rituals that I have copied are engraved in my mind every word; the etiquette and customs that I have heard are discussed, and they are repeated sentence by sentence. She began to secretly make friends with the cannon fodder concubines who were also trapped in the palace: Qi Lingtan, who was replaced by her sister-in-law for marriage, and Hu Chanyi, who was used as a test subject for etiquette. The three of them drank together, using etiquette as their sword, and conspired to "ceremony judge". At the Mid-Autumn Palace Banquet, the owner once again snatched her etiquette manuscripts. Shen Hengzhi stood up with a flick of her sleeves and asked the ceremonial judge in public - reciting the "Yin Li Shu Zheng" which had been lost for three hundred years. The light of wisdom shot up from the sky, and everyone in the audience was shocked. As long as the etiquette judgment is successful, she will no longer be anyone's substitute. But she didn't know that on the ninth level of Huiguang, the Demon Emperor was playing with the chess game of Qing Jie. And the cold-faced guard Pei Budu who blocked the sword for her was her real calamity.