Introduction to Jia Bian Tower: The Great Wall Hefang Kouguan City in the scenic area was first built in the Northern Qi Dynasty during the Southern and Northern Dynasties. It was renovated and expanded in the third year of Longqing in the Ming Dynasty. It is said that it was built during the period when the famous anti-Japanese general Qi Jiguang guarded Jimen. Due to the terrain restrictions on the top of the mountain, the "Jia Bian Building" was built into a narrow rectangle, with three arrow windows on the long side and two on the short side. This shape is unique among the Great Wall buildings. It was listed as a World Cultural Heritage by UNESCO in 1987. It is also the only flat "watch tower" landscape in the world. "
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