This book tells the story of a modern woman, Su Wan, who travels back to ancient times and becomes an extremely talented woman who is both skilled in medicine and poisoning. Suwan's fate was unlucky. Her mother was killed by her scumbag father, and her grandfather's family was wiped out by the emperor's conspiracy. With her excellent medical and poison skills, she established herself in troubled times and gradually uncovered the truth behind her family's murder.
At the same time, the twelfth prince Nie Xichen also has an unknown secret of his life experience.
In the chaotic background of the Four Kingdoms and Nine Cities, Su Wan and Nie Xichen met by chance and got to know each other. The two decided to join forces and travel between the four countries and nine cities, using their respective wisdom and talents to reveal the conspiracy hidden behind power. Not only do they have to face the obstruction of powerful enemies, but they also need to stabilize their alliance in complex political struggles, and ultimately unify the world and establish a new era of peace and prosperity.
