Mopan Village Mountain Fortress

　　Mopan Village Mountain Fortress is located at the border between Tumen City and Yanji City in the Yanbian Korean Autonomous Prefecture, Jilin Province, and is an ancient site dating back to the Tang to Jin periods. Within the fortress, there are a few remnants from the Bohai Kingdom and a large number of relics from the Dongjing Kingdom.

　　The city walls were built along the mountain terrain using stone materials, forming an irregular oval shape with a perimeter of 4,454 meters. There are four gate sites. The southeast gate is situated on a hill and is relatively narrow, without a barbican. On the steep slope outside the gate, there is a zigzag ancient path, and near the inner side of the gate, there is a set of building ruins. The east and north gates are located at the mouths of valleys and are wider, each featuring a barbican, serving as the main passages for entering and exiting the fortress. The west gate is located in the middle of the city walls atop the western hill, and outside the gate, there is an “eight”-shaped defensive structure.

　　The interior of the fortress has relatively open terrain. At the gentle slope in the center of the fortress stands a palace foundation with a stepped design, consisting of nine levels. Each level is about 10 meters wide and 17 meters long, with foundation stones arranged on top. The foundation stones are arranged in a rectangular pattern and are roughly hewn. Scattered across the palace foundation are bluish-gray fabric-patterned tiles and earthen gray pottery shards. Multiple residential sites still remain within the fortress. Artifacts unearthed inside include jade belt ornaments, jade mandarin duck pendants, official seals of the Dongjing Kingdom, bronze mirrors, divination tools, as well as hundreds of copper coins from the Tang, Song, and Jin dynasties.

　　This fortress served as the southern capital of the Dongjing Kingdom, where King Puxian Wannu of the Dongjing Kingdom once resided. The Dongjing Kingdom was a local feudal separatist regime established by Puxian Wannu, a descendant of the Jurchens during the late Jin and early Yuan periods, in the northeastern region of China. Mopan Village Mountain Fortress is the most important cultural relic for studying the politics, economy, and culture of the Dongjing Kingdom, possessing significant historical and scientific value due to its uniqueness.

　　In May 2006, Mopan Village Mountain Fortress was designated by the State Council as part of the sixth batch of Major National Historical and Cultural Sites.