Who were the two kings who became the king of national subjugation? What is the cause of extinction?

There are many kings of subjugation at home and abroad. Take China as an example. It seems that there were only two subjugated kings in the Northern Song Dynasty.

In the seventh year of Song Xuanhe (1 125), Jin Jun went south to attack the Song Dynasty after destroying Liao, and hurriedly gave way to Prince Huan (Qin Zong), claiming to be the emperor's father. In the first year of Jingkang (1 126), the Jin army attacked the capital of the Northern Song Dynasty (now Kaifeng, Henan) and died in the Northern Song Dynasty. In May of the following year, 8 Jin Army returned to the north with Qin Hui, and first released gold to Beijing (now Baicheng, Acheng District, Harbin). Jintianhui was imprisoned in Wu Guocheng (now north of yilan county, Harbin) for eight years (1 130). Hui Zong died in 1 135, and Qinzong died in 1 156.

If you are interested, you can check the shame of Jingkang. Isn't Li Hong from Manjiang ashamed of Jingkang? That's what I said. I hope it helps you.