Princess Fukang is the eldest daughter of Injong, and her biological mother is Miao Guifei. Miao Fei also gave birth to Zhao Zhen's second son, Wang Yong Zhao Xin. Princess Fukang was born in 1038, when Zhao Zhen was 28 years old. Zhao Zhen's eldest son praised Wang Zhaoyun, who died a year before Princess Fukang was born. Therefore, Zhao Zhen, who has only one daughter, regards Princess Fukang as the apple of her eye and loves her in every way. Princess Fukang was also smart and filial since she was a child. When her father Zhao Zhen was ill, she prayed barefoot and was willing to suffer for her father, which made Zhao Zhen, who had few children, very happy. With the growth of Princess Fukang and the constant death of Zhao Zhen's children, Zhao Zhen cherished and pampered the surviving eldest daughter Princess Fukang, which can be described as a collection of thousands of pampers. In the Northern Song Dynasty, the princess was given a good name first, and then a country name. When Princess Fukang was twenty years old, Renzong named her Princess Yan.

To this end, Zhao Zhen held a grand conferring ceremony, the scale of which is comparable to the ceremony of conferring the Queen. Princess Fukang also became the first princess to have a conferring ceremony since the founding of the Song Dynasty. A mother is expensive because of her daughter. In the same year, Princess Miao, the biological mother of Princess Fukang, followed her daughter and was upgraded to a virtuous princess. And her mother's three generations were honored by the emperor. This shows that Injong is deeply interested in Zhao Zhen's beloved daughter. However, the marriage arranged for Princess Fukang by Zhao Zhen, who dotes on her daughter deeply, is not satisfactory, which also caused the tragedy of Princess Fukang's life. Wei Li, the second son of Li Yonghe, is good at poetry, calligraphy and painting. At the age of thirteen, Injong summoned him in the temple, and because of his love for talent, he proposed his beloved Princess Fukang to him.

Renzong Zhao Zhen spent100000 yuan to build a luxurious princess mansion for Princess Fukang, and held a grand wedding for Princess Fukang and Xu Weili. However, the married life of Princess Fukang and Wei Li is not happy. Princess Fukang, whose feelings are empty, is getting more and more depressed, and finally she is insane. From time to time, she tends to be self-destructive and manic. If you are going to hang yourself, you will set it on fire. Princess Fukang's constant absence made Renzong heartbroken. In order to appease his daughter, Renzong recalled Liang Huaiji to the princess regardless of the opposition of the admonisher. But Princess Fukang's poor mental condition has not improved much. When Zongshen, the son of Yingzong, ascended the throne, he named his aunt Princess Fukang as big princess of Yue, and cancelled the princess's privileges in her husband's family. 1070, 33-year-old Princess Fukang died of depression. Xu's envoy was also demoted to Chenzhou on the grounds that he owed the emperor and didn't care about his master.