The "pulled" poisoned corpses in mass graves late at night, the ambergris embroidered on the blood-stained clouds, hide the secrets of the former queen's old case; the secret passage account books in Tongzhou Cang, and the court gambling in Linglong Pavilion stir up the life-and-death game between imperial power, aristocratic families and poor families.
Su Jiuzhen, a prodigy in toxicology, entered the game to investigate his father's hatred, but he uncovered a shocking conspiracy involving the embezzlement of military pay ten years ago. She teamed up with Lu Yan, the upright commander of the Forbidden Army, Chu Qinghuan, who was well-informed, and Shen Zhiwei, an engineering genius, to deal with the emperor's cold silence, Zhao Jingyuan's rebellious ambitions, and the greedy calculations of the family. From the ice cellar of the Taiyuan Hospital to the border mines, from the poisoning case in the harem to the Qiuye mutiny, every step is on the tip of the knife - to find out the real culprit who poisoned the queen, to expose the emperor who embezzled military pay, and to prevent the world from falling into civil war.
When the secret letter appears and the evidence is conclusive, they make a choice at the center of the power whirlpool: only seek personal revenge, or protect thousands of people? In the end, some people went into seclusion to practice medicine, some implemented the New Deal, and some defended their country. All that was left was the sentence "The road is long but the journey is about to end." In the embers of power and strategy, the weight of ideals and people's hearts can be seen.
