Sohu.com Yin / 28° "China's two thousand-year-old Tunken Bian History Live Fossils" mysterious Guo Mari Castle  Blue Wind Photography 2017-07-05 · Tourism field creator subscription  Guo Mari Castle is known as the two thousand-year-old Tunken Bian History Live Fossils in China, is the only national historical and cultural village in Qinghai Province. It is also one of the earliest and most complete castles in Tongren area. Guo Mari Ancient Castle was built in the 7th century AD for the earthen plate. It is a barracks city guarding the border, which has a history of more than 700 years. The castle is rectangular, 260 meters long, 96 meters wide, the building area is 2496 square meters, there are three city gates in the east, west and south, the east gate is the main entrance, and it is cast in red copper. The alleyway in the castle is covered with stars, the widest is 2 meters, and the narrow place is only for one person to pass. Standing in the narrow and quiet alleyway of the castle, the footsteps on the bluestone slabs, making people seem to be in the past war-floored era. Surrounded by towering mottled walls and a quiet courtyard, occasionally one or two clove flowers stick out of the wall, and it makes people feel like they are outside the world. Every gate is set on the top of the gate, which is a unique place for the castle architecture.