On the day she was demoted to a slave, Shen Zhaoyi threw a divorce note in the face of Crown Prince Xiao Yanzhi, tearing into pieces the hypocritical shackles of palace rules and marriage. She is not an abandoned wife, but an orphan from the previous dynasty, with a secret book of blood edicts hidden in her body. Lin Zhiyi from the Huanyi Bureau secretly handed over the fragments of the law. Grandma Cui's old things contained the truth. The salt merchant Pei Yanqiu paved the way with his life, while the crown prince's concubine Jiang Shuhua worked hard to dye the phoenix crown red with her blood. When the truth emerges, is it revenge or reconstruction? The letter of divorce is not the end, but the first crack in the new dynasty.