Koguryo: Chinese History or Korean History?
One claim from the Northeast Project asserts that Koguryo is Chinese history, because most Koguryo refugees moved to China and were absorbed into the Han Chinese populace. Of the Koguryo refugees, approximately 28,000 people were forcibly moved into China by the Tang dynasty. Most of the remaining population stayed in Koguryo and were absorbed into Balhae upon its founding by Jo-yeong Dae (King Go). Some fled from the rule of the Tang dynasty into Japan or joined the Göktürks in Inner Asia. Others went to Silla. China contends that only one-seventh of the Koguryo refugees emigrated to Silla to eventually become ancestors to modern-day Korea while the majority of refugees became Chinese, and therefore, Koguryo is a part of Chinese history.
However, those who migrated to the Tang dynasty were forcibly displaced from Koguryo regardless of their will, and their numbers dwindled in China. Those who chose Silla did so based on the alliances formed through trilateral exchanges between the Three Kingdoms and retained the line of succession and the willingness to reconstruct. There were major differences in the way the Tang dynasty and Silla accepted Koguryo refugees. The Tang dynasty forcibly moved Koguryo refugees to prevent the revival of Koguryo. On the other hand, Silla accepted the refugees, established the
Kingdom of Bodeok, and subsequently unified the Three Kingdoms of Korea. This indicates that Silla succeeded Koguryo and Baekje history. This line of Koguryo succession has continued through Balhae, the Later Three Kingdoms of Korea, and Goryeo, to the modern-day Korea.
Koguryo's Affiliation with Korean History