Dongxia is the Great Kingdom of Zhen, known in Korean history books as Dongjin Kingdom, is a state established in northeast China in the 13th century by Puxian Wannu. Originally a general of the Jin Dynasty, Puxian Wannu established himself as The Heavenly King in the third year of Zhenyou (1215), with the name of Dazhen and the era name of Tiantai. It fell to Mongolia in 1216 and became self-reliant again in 1217, with the name of eastern Xia. At its peak, it reached Shangjingcheng (present-day Baichengzi, Acheng, Heilongjiang Province) to the northwest, Posu Road (present-day JiulianCheng, Dandong, Liaoning Province) to the southwest, and Southeast to Yulaolu (present-day Jizhou, North Hamgyong Province, North Koreans) and Shupin Road (present-day Shuangchengzi, Primorsky Krai, Russia). The political center of the early Dazhen Kingdom was in Xianping (present-day kaiyuanbei, Liaoning), and after the restoration of the state, it moved to Nanjing (present-day Chengzishan, Yanji, Jilin). In 1233, the Mongol Wokoutai faction crown prince Guiyu was destroyed.
In 1215 AD, when Emperor Xuanzong of Jin xuanzong was defeated and died in October of the third year of Emperor Xuanzong of Jin,1215, in order to revive the spirit of the Jurchen nation, he established himself as the king of heaven in Tokyo, with the name of "Dazhen" and the era name of Tiantai, seeking the revival of Jurchen.
At the beginning of the establishment of Dazhen, the situation was difficult, besieged by the three kingdoms of Mongolia, Jin, and Western Liao, in order to seek the future, in October 1216, Puxian Wannu handed out the surrender table, and took his son Thege as a hostage to serve the imperial camp and surrendered to Mongolia. In June and July 1217, Puxian Wannu once again established himself, changing the name of the country to Eastern Xia, and the era name was still used as Tiantai, and the capital Kaiyuan City (whose location is now said to be different). It is also said that its national name was originally Bactria , because it is located in the east, so it is named after the Western Xia. Korean history books call it Dongjin. After several years of operation, the Eastern Xia continued to use troops, and the influence was within its reach, including the areas of Jin's Lazy Road, Supin Road and Huli Gai Road, and the territory range was roughly east to the Sea of Japan, northwest to Huli Gaicheng (Heilongjiang Yilan), west to Zhang Guangcailing, south to PoSu Province and North Korea's Qingzhou (around north Hamgyong Province, North Korea), reaching the eastern section of the Ancient Great Wall of Korea from the south to the west through Dingping in the east, and the northern part of the Heilongjiang Bayan and the north to the lower reaches of the Heilongjiang River. From the west to the west of present-day central Jilin to the middle of the southern part of Heilongjiang (later including the capital of Jinshang), east to the Sea of Japan. In September 1233, the Mongol army took the route of Goryeo, and the Great Khan of the Jin Mongols, Bo'er Zhijin, Wokoutai, ordered the crown prince Bo'er Only Jin Guiyu and the kings Boer Only Jin and led the left wing army according to the red belt to conquer Puxian Wannu, and Puxian Wannu was defeated and killed in the resistance. The Mongol army continued to advance, capturing "Kaiyuan (eastern Mudanjiang river in Heilongjiang Province), Ziyi (middle and lower reaches of the Suifen River Valley), and eastern Tuxiping" ("History of Yuan"). The Eastern Xia Kingdom fell and was founded for nineteen years
Nine Dragons Carrying Corpse Coffin: The coffin of the King of Wannu in the Eastern Xia Kingdom, it is said that the coffin is engraved with nine dragons, but this dragon is not a dragon, but a new dragon created by ethnic minorities, and the nine dragons surround the coffin of the King of Wannu, as if pushing him to heaven. The body of the dragon is the body of a snake, but the dragon's foot is the centipede's foot, and there are very poisonous insects around the coffin to protect the coffin. This nine-dragon coffin is different from the ordinary coffin, but it is an octagonal shape, each corner is supported by a dragon, and the eight dragons are surrounded by a dragon to play a stable role. This mysterious coffin was also mentioned in the novel "Notes from the Tomb Robber". It is said that the owner of this coffin is the King of Wannu of the Eastern Xia Kingdom, and the nine dragons on it are actually giant earthworms.
In the novel, the Nine Dragons of the Eastern Xia Emperor carried the coffin in Changbai Mountain, and the history books rarely mention the existence of such a Jurchen regime as the Eastern Xia, as a national entity, at the time of the decline of the Jin Dynasty, in order to seek the revival of the Jurchens, they stood on their own, existed for more than ten years, led most of the two provinces of Jilin and Heilongjiang, and shared the goryeo offerings with the Mongol Khanate, dominating the Liaodong region. The name of the country was initially Daejin, later Eastern Xia, and Korean historical records called it Dongjin.
Archaeologists have recently verified that the Eastern Xia Kingdom is located about 10 kilometers east of Yanji City, at the junction of Yanji City and Longjing City, on Chengzi Mountain, where the Burhatong River and Hailan River converge. Chengzi Mountain, because there is an ancient city built on the mountain, hence the name. The top of the hill is surrounded by a city temple built of mixed stones, about 4.5 kilometers long, and there are palace sites in the middle of the mountain, and many cultural relics of the Eastern Xia Kingdom have been unearthed. At the end of the Jin Dynasty, it was the site of Nanjing in the Eastern Xia Kingdom. The city wall is built of stone according to the mountainous terrain, with an irregular oval shape, a base width of 5-7 meters, a height of 1-3 meters, and a circumference of 44.54 meters. There are 4 gate sites. The southeast gate is built on a hill, narrower, without urns. There is an ancient road in the shape of Ichino on the steep slope outside the gate, and near the inside of the gate, there is a group of architectural remains. The east gate and the north gate, built at the mouth of the ditch, are wider and have an urn city, which is the main passage in and out of the city. The west gate is located in the middle of the city wall on the west hill, and there is a figure-of-eight defense outside the gate. The terrain of the city is open, and there is a palace site on the gentle slope in the middle of the city, which is a stepped type, a total of 9 steps. Each step is about 10 meters wide and 17 meters long, and is lined with foundation stones. The base stone arrangement is rectangular in plan and the processing is relatively rough. The site is dotted with blue-gray cloth tiles and clay pottery tiles. There are still many residential sites in the city. About 600 meters away from the north gate, on the slow slope of the north side, there are dense residential sites, and the surface of the ground is scattered with a large number of broken bricks and debris from the Liaojin period. On the south and west sides of the palace site, there are also large residential sites, scattered with cultural relics from the Liao and Jin dynasties. Near the southeast gate, there is a small wall remnant, and the walls are scattered with gray bricks and tiles from the Liao and Jin dynasties. Gray brick tiles from the city period. On the slopes on the west side of the city, you can faintly see the orderly arrangement of sunken residential sites. On the slope opposite the palace site, there are many brown or reddish-brown tiles, and the convex surface is decorated with rope patterns, grid patterns, mat patterns, etc. This slab tile is similar to the Goguryeo slab tile excavated from the bazaar. Most of the artifacts in the city belong to the Eastern Xia Kingdom of the Jin Dynasty.
In 1961, the People's Committee of Jilin Province announced that the site of the city was a key cultural relics protection unit in Jilin Province The Ancient Great Wall of Yanbian is located on the ridge of Shuangfeng Mountain in Badaogou and Pingfeng Mountain in the north of Yanji City, and it starts in the west and on the slope of Erdaogou in Dongshan Village, Tushan Township, Longxian County, and winds through the lofty mountains of Xicheng, Longmen Township, Longjing City, Taoyuan, Tongfo, Badao, Yanji, Chang'an Township of Yanji City, and disappears near Mopan Mountain, which is 15 kilometers east of Yanji City. The Great Wall is mostly built of earth, but also of stone, with a total length of about 150 kilometers, and 17 beacon towers have been found. The longest section is about 10 kilometers long from the Slender Scale River to Laotougou Town, and the best-preserved section is in Guanchuan Village in Laotougou, which is still about 3 meters high. There is no documentation on the ancient Great Wall. According to research, it is believed to be the river city of the Eastern Xia Kingdom. It is also believed that it was built in the Bohai Sea, and together with the "side trenches" of Hunchun, it was the arched city of Beijing and Tokyo in the Bohai Sea, which was later used by the Eastern Xia Kingdom and converted into a defensive project. It is also believed that it is the Great Wall of the Jin Dynasty or the Great Wall of the Goguryeo Period