In the deep palace where imperial power and medicine are intertwined, the talented medical woman Yun Heng possesses the magical power of "medicine roulette", abides by the "Seven Commandments of Toxicology", and uses the shocking method of "fighting poison with poison" to save the world. She joined forces with the innovative Crown Prince Xiao Heng to turn the tide when the Queen Mother was dying, and then shake up the long-standing imperial hospital, which had long been plagued by abuses, and held the imperial doctors accountable, targeting the "Royal Medication Regulations". Faced with the criticism and conspiracy of "poisonous techniques that disrupt power", Yun Heng used the Seven Commandments as a shield and the roulette wheel as a blade to protect the true heart of a doctor in the delicate balance of medicinal properties and toxicity. This is a game about life, power and medical knowledge. When the golden light of the new rules illuminates the palace wall, the first commandment engraved will eventually return the art of Qihuang to the right path of saving lives and healing the wounded.
