In order to illustrate this problem, we should start with the decline of imperial power after the establishment of Zhao Kuangyin DaSong.
As we all know, the Song Dynasty was founded by Zhao Kuangyin, so Zhao Kuangyin became the founding king of the Song Dynasty.
The emperors of the Northern Song Dynasty, except the founding emperor Zhao Kuangyin, were all descendants of Zhao Guangyi. After Zhao Guangyi proclaimed himself emperor, in order to stabilize the family, he killed Song Taizu and Zhao Kuangyin's two sons left in the world. Zhao Dezhao, the second son of Zhao Kuangyin, was forced to death by Zhao Guangyi, and Zhao Fang, the fourth son of Zhao Kuangyin, died in the same way as Zhao Kuangyin.
After all Zhao Kuangyin's sons died, Zhao Guangyi got rid of his younger brother Zhao Tingmei. In this way, no one dares to spy on their throne. Therefore, after Zhao Guangyi became emperor, the Northern Song Emperor has been handed down from generation to generation among his descendants. In other words, the emperors of the Northern Song Dynasty, except the founding emperor Zhao Kuangyin, were all descendants of Zhao Guangyi.
The emperors of the Southern Song Dynasty, except the founding emperor Song Gaozong Zhao Gou, are all descendants of Zhao Kuangyin. After Zhao Gou fled, the Southern Song Dynasty was founded. He was the first emperor of the Southern Song Dynasty, Song Gaozong. Song Gaozong also has a name in history, called the fugitive emperor.
No way, his father, brothers and sisters were taken away by the jurchen. May have left a deep shadow on him. He ran away as soon as he heard that Jurchen had attacked.
It was when he escaped that he lost his fertility because of excessive tension. At that time, Zhao Gou already had a son, but his son was scared to death when he escaped later.
This means that the royal family has no heirs.
This is the specific reason why Song Gaozong and Zhao Gou passed the throne to Song Taizu and Zhao Kuangyin. We have to feel that history is sometimes wonderful.
As bizarre as a novel, perhaps this is the fate of freedom.
If Zhao Kuangyin has a soul in heaven, he should rest in peace. After all, the throne that originally belonged to their family finally returned to their hands.
However, the territory of the Southern Song Dynasty has always been the smallest among the emperors of the Central Plains. Although many generals like Yue Fei, Han Shizhong and Liu Qi emerged in the Southern Song Dynasty, they never did anything because of the incompetence of the emperor.
I have to say that this is a kind of sadness for Zhao Kuangyin's descendants.