Lin Zhi, a female doctor of chemistry, traveled through Dayong and became a famous princess with a tough life. The first marriage was to the prince of the general Zhenbei, but her husband died in battle; the second marriage was to the old emperor in his old age, and the emperor fled when the country was in chaos. After her third marriage, the new emperor Yuwen Xingce relied on her knowledge of chemistry to refine medicines, make weapons, and stabilize the country. From the abandoned daughter of her third marriage, she counterattacked and became a generation of empress who holds the Phoenix Seal and works side by side with the emperor.
