Xie Zhaoning, the legitimate daughter of the Prime Minister, was sent to the cold palace for taking the blame for her stepmother. Faced with the triple murderous intent of poisoned wine, hidden arrows, and rumors, she used "showing weakness to hide the edge" as an edge, taking advantage of loopholes in the palace rules to counter the female officials in charge. She prepared a detoxifying soup with dead flowers and dead leaves, and predicted the trajectory of the concubines' fights based on the "Power Strategy" she studied with her father when she was young. From writing family letters for low-ranking concubines to exchanging news, to diagnosing the pulse of a sick princess to obtain the Sacred Heart, and gradually disintegrating the queen's gang members. In the whirlpool of the prince's fight for the right to inherit the throne, the previous dynasty's party struggle, and the chaos of power and government, with a pure battle of wits with "no golden fingers", she counterattacked from the cold concubine to the master of the six palaces, and finally uncovered the old case of the family's extermination, and reached a balance of "ruling the world together" with the emperor. The most exciting points of the whole text are focused on "counter-attack in desperate situation", "accurate slap in the face" and "attacking the shield with the spear of the son", with 3-5 reversal hooks embedded in each chapter.