Cesarean Ungi describes Korea's history from Dangun and shows independence in identifying it on par with Chinese history.

 Even in the late Goryeo Dynasty, historical research and writing activities were actively conducted. In particular, after the Musin Coup, there was a movement that there should be a correct understanding of traditional culture based on national independence consciousness. This is shown in the Haedong Goseungjeon Hall of Gakhun, the Dongmyeongwangjeon Hall of Lee Gyu-bo, the Samguk Yusa of Ilyeon, and the King Seung-hyu Lee also described the history of Korea from Dangun, showing independence in grasping our history equally with Chinese history. - National Preceptor (Sang), page 148, "What are you going to do with a prosperous country like the year and moon of Won and the moon?" The high and wide of the successful virtue is so early that it was submerged in Yeosu and brought up the Yuan Dynasty to sing many people. The virtues like our king are widely crazy and offer gifts from various countries outside the sea. It is the first time in a country like this since it was perfect, as all the wide heaven and earth in China are bare and the land is crowded with people. Since there is a separate heaven and earth in Jiri-dong, it is divided into Jungjo and Duyeon, surrounds three sides of large waves, and is a continent in the north, so this is Joseon, the middle border. The Hyeongseung of Gangsan Mountain is named in the world, and it is called Sojanghwa because it is named by Hwain, a house of courtesy in the village of Gyeongjeonchakjeong. Since he is a journalist who started the late Joseon Dynasty, he fled to Kim Myo-chun, the first year of King Mu's reign, and established a country on his own. King Mu sends a string from afar, so when he visits to pay back as an example, he asks about the human race of the owner of Hong Beom- King Jun, who becomes the 41st grandson, lost his country and even lost his people. After a long new month of 928 years, the reporter passed away. King Jun, who lost his country, moved to Geumma-gun and became a king again after forming a capital. In the 21st year of Goje's reign, Wiman, the general of the Han Dynasty, was born in the Dynasty and chased Jun and took it away in the fifth year of the disease. The grandchildren were torn down, and Han Mu-je sent soldiers to subjugate them in the 3rd year of Wonbong's reign. It is the payment of the crime of betraying and chasing the country in 88 in the third generation of supporting the country. Rather proud of being called precious flower by the Chinese, praising the circle that has repeatedly invaded Goryeo for decades, and because of the reporter's Dongnae, Joseon's land has become a polite land, counterfeiting King Jun as the 41st generation of reporters, and dismissing Wi Man-jo as a lover. He is only a great Mohwasaist who was proud of being called precious flower by Lee Seung-hyu, the author of the caesarean, or his own. (The same goes for "Three Kingdoms" too. The reason why it came to evaluate Cesarean Ungi as a book "representing independence" is that this book is the oldest document to record Dangun mythology along with Samguk Yusa, so it was served back and forth and to break its nose. It is the evils of Korean-style nationalism that only Dangun and Gojoseon come out, they do, serve, and watch unconditionally. There is no consideration of the background of the Dangun myth in the history textbook of the kingdom and the Three Kingdoms.