The tomb of Emperor Buksong in Hoeryeong, Hamgyeong-do?

 Written by Lee Joong Hwan in the late Joseon Dynasty...Among the people's general opinions of Taekji, Paldo general theory - Hamgyeongdo - On the side...When I reached Undusanseong Fortress in Hoeryeong along the Tuman River and looked outside the castle, there were tombs on a large hill, and the people of the village referred to it as the Royal Tomb of Emperor. When Mokgeuk-dong, a resident of the Qing Dynasty, came to Joseon due to political monument issues, he saw this and tried to dig it up, but he got a short monument next to the tomb, and the four letters Songjejimyo were written on it, so Mokgeuk-dong and others soon built a large beacon. So, I finally learned that the five national fortresses of the Geum Dynasty were Undusanseong Fortress. However, it is not known whether Songje was called Hwijong or Heumjong... (Simple) ... People in this village who were plowing fields on the hill sometimes find old jegi, liquor pots, pots, and fire, and this tomb seems to be the tomb of Seonhwa Royal Tombs and the rest of the courtiers and government officials. According to the people of this town, there is another emperor tomb about 10 miles north of the Tuman River, which seems to be the tomb of King Heumjong, but it is not clear. * Note: Seonhwa is the last two emperors of the Northern Song Emperor Hwijong's Yeonho. In July, the two emperors of Buksong were sent to Junggyeong (now Beijing). On August 21, the 6th year of Cheonhoe (1128), they reached the Geumguk Sanggyeonghoenyeongbu. On the 24th, King Hwijong and King Heumjong knelt down in front of King Taejo's tomb in plain clothes and performed "Gyeonyangrye". After that, they entered Geonwonjeon Hall and learned about Geumtaejong. Oh Geol-mae granted the title of Hundeokgong to Song Hwi-jong, and ordered Song Heum-jong to be Jung Hon-hu to laugh at them. In October, the two emperors of the Song Dynasty were sent to Hanju-si, the northern part of Risu-hyeon, Jilin Province. In July (1130) of the 8th year of Cheonhoe, the two emperors were also sent to Horigae-ro (the old castle north of Uiran-hyeon, Heukryonggangseong), Cheonhoe 13th year (1135), Hondeokgong Jogil died in April in the 6th year of King Jeongjong's marriage (the 6th year of Haerung). Emperor Buksong finished his life miserably like this. Hoeryeong City is opening... Relics from the Bronze Age were excavated from the ruins of Hoeryeong Odongwon-si (North Korean Historic Site No. 69) in Odong-ri, and Hoeryeonghyanggyo Confucian School (North Korean Treasure No. 51), which was built in 1551 (Myeongjong 6). Undusanseong Fortress (North Korean Historic Site No. 68, or Oguksanseong Fortress) in the landline labor district, which was built during the reign of King Chungsuk of the Goryeo Dynasty, has a tomb called the Royal Tomb of Emperor of the Song Dynasty. In addition, there were Musanryeong Pass and Ssanggaeam Hermitage, where you can see the East Sea, and there were Odaeamsa Temple and Gamsa Temple, which do not exist. About Undusanseong Fortress... Undusanseong Fortress is a stone fortress built using the rugged mountains of Undusan Mountain, which rises high along the Tuman River in Seongbuk-ri, Hoeryeong-gun, North Hamgyeong Province, and has a circumference of about 6km. Undusan Mountain is a good place to build a castle with a cozy valley in it, with cliffs on the west and north sides facing the Tuman River, and ridges on the east and south sides. The walls of the fortress remain on the ridges in the east and south, based on the exterior construction method, and were built by mixing double-sided construction methods. All of the castle stones were made of stones trimmed in the form of tetrapods. The existing height of the wall is 3 to 5m. The gates were placed on the east, west, south, and north slopes, of which only the north gate was placed in the northeast alley avoiding the northern cliffs. Ongseong Fortress was built at the east and south gates, and the west gate was placed in a place where the wall was bent about 50m inward, so that the left and right walls outside the gate replaced Ongseong Fortress. The poles were placed in four places: east, west, south, and north. Among them, Namjangdae and Dongjangdae were installed on the peak, and Seojangdae and Bukjangdae were installed on the cliff. All the water rising from the castle gathered together and flowed into the Tuman River through the west water gate. Undusanseong Fortress is located in the northeastern part of Korea and is a valuable relic for studying the layout and national defense system of Goguryeo along with the history of Goguryeo. Is Ogukduseong Fortress located in Heukryonggangseong Fortress or Hoeryeong, Hamgyeong-do?