Language relationship between Goguryeo and Han.

 Historical records 1. Jinhan was on the east side of Mahan, and when the crossroads bite him, he came to Han to avoid the hard work of Jin as an old decedent, Mahan handed over the land of the eastern change. Their language is not the same as Mahan, so the country is called Bang, the palace is called Ho, and the few old servants are called peddlers and each other is called Do, so it was similar to 어와 language. The historical records of the Three Kingdoms of Korea 2. Baekje's language and attire are approximately the same as Goguryeo's. It is different not to spread your arms when walking and not stretch your legs when bowing. Mo is called Gwan, Yu is called Boksam, and Gorgon is called Gorgon. Among the words, the language of the subordinate is mixed, and it is also called Jinhan's flow rate. At first glance, the historical records above Baekje seem to convey that Silla, which succeeded Jinhan, was in line with Chinese Jiner, and Baekje, which succeeded Mahan, was in line with Goguryeo. However, the above two articles do not convey the general circumstances of Silla and Baekje, but emphasize unusual facts. In other words, the first feed did not mean that all Koreans were immigrants from China, so all Koreans used similar words to the Qin Dynasty of China, but emphasized that some of them were promising people from China, so Chinese elements were mixed in their words. Likewise, the second historical source does not mean that all Baekje people used the same words as Goguryeo, but emphasizes that some of the Baekje people introduced from Buyeo, that is, the language of the Baekje royal family, was similar to Goguryeo. Baekje's royal family was a part of Buyeo people, but Baekje's ruling class would have continued to speak Mahan, so the Baekje royal language and the general public's language would have been different. According to the Baekje Dynasty before Juseo, the king's surname was Buyeo, and it was called Eorahan, but the general people called it Geongilji and the king in Chinese. That's what it says. This suggests that the ancient Yemaek-gye language and marginal language were not the same. In fact, if you analyze the convenience of Goguryeo language that remains to this day, you can see that it was a different language from Silla language.(Lee Ki-moon's Korean Formation History) In short, Korean was still commonly used in Korea because Koreans formed an absolute majority in this area, even though some of Buyeo people flowed into Mahan, or Baekje, and some Chinese people flowed into the Jinhan, or Silla area. On the other hand, it seems that Yemaekgye language, which is different from Korean, was generally used in the Goguryeo area. If Goguryeo's language was different from Chinese and different from Chinese, it would be one of the signs that Goguryeo did not belong to the historical community of China nor to the historical community of Korea, that is, the third fluctuation. However, one thing that cannot be overlooked here is that the fluctuations during the period when Goguryeo occupied fluctuations were very closely culturally related to Korea at that time. Linguistically, Goguryeo was a different language from Silla, but it can also be confirmed that it was the only language that showed close kinship with Silla. The fluctuation and undifferentiated state of Korea continued from the Gojoseon period to the Balhae period. Therefore, Goguryeo is regarded as an element of fluctuation, and at the same time, it cannot but be understood as a part of Korea. However, it should be remembered that the center of Korea was not Goguryeo, but Silla and Baekje. Today's Korean language continued and developed in the 10th century when Goryeo re-unified Samhan, and it would be difficult to deny that the basis of Korean culture was ancient Korea, Baekje, Silla, or Samhan, based on the linguistic research results (Igimunification.