In the middle period of Qianlong's reign, the harem was a shura without smoke, and lives were always the bet in the struggle for power. Shen Ruohan, a medical girl from a poor family in the south of the Yangtze River, was exiled because her father was falsely accused by the father of Concubine Gao. In order to save her father and pay off her debt, she hid her superb medical skills and became a slave in the palace. After witnessing the tragic death of a palace maid on her first day in the palace, she recognized the iron law of "life or death" in the harem, turned family medical books into a murderous weapon, and replaced her benevolence with ruthlessness.
From a palace maid in the Huanyi Bureau to an exceptional concubine, she revived the happy concubine with a single needle, but secretly left the root of the disease to cut off her path to favor; faced with Concubine Gao's poisonous meal, she reversed the poison and killed the other maid, and took advantage of the opportunity to be promoted; the pregnant dragon was secretly plotted by Concubine Xian, but she cleverly used someone else's belly to pass on the crisis, triggering a conflagration between the two forces, and reaping the benefits. In the harem, Empress Xiaoxian's temptations, the concubine's alliance and rebellion, and the empress's mortal enemy are all fighting each other, with every step being on the edge of a knife.