Yeon Nam-saeng (泉男生)
Eunuch (高慈), Korean (Korean)
Yeonheonseong (泉獻誠) 其先高句驪國人 (Goryeo national)
Yeonnam Mountain (泉男産) 遼東 朝鮮人 (Korean people)
Yeonbi (泉毖)
Gojin (高震) Balhae people
1) Yeon Namsaeng: Yeon Namsaeng, who betrayed Goguryeo, also received the title Byeon Guk-gong (卞國公) from the Tang, meaning Byeon Han (卞韓, 弁韓), one of the three Hans. Therefore, there is evidence that the Tang Dynasty also viewed Goguryeo as one of the three Han lineages.
2)Yeonbi Mannyeonin: Yeonbi, from Mannyeon County, Jiangsu Province, is the great-grandson of Yeonnamsaeng. So, he is the fourth generation person to have gone to the Tang Dynasty. Starting from the 3rd or 4th generation who were taken to the Tang Dynasty, the Tang Dynasty’s immigration policy changed, and family registration was changed to the area where the father or family member was forced to serve in the military, rather than the original origin or place of birth. It has become so small. Fortunately, it was written on the tombstone that he was the great-grandson of Yeon Nam-saeng, so I later found out that he was of Goguryeo descent. This passage makes it clear that the Party’s assimilation policy began from the 3rd to 4th generation of Goguryeo descent.
Summary) If you look at the tombstones of Goguryeo people who were taken to the Tang Dynasty and died, they often refer to themselves as Joseon people or Samhan people.
It is correct to say that there has been a sense of kinship as members of the same lineage since at least the Three Kingdoms period.
The Tang Dynasty also recognized that the Three Han Dynasties were different from themselves.
Goguryeo is of course Korean history.
(Broadband gallery perm)