How come there are so many ""forts"" and ""camps"" in Ningxia? How are they formed?

"Fort" has three pronunciations, and in the Northwest it is mostly pronounced "bǔ", referring to villages and towns with walls. The most famous one is Yinchuan Zhenbei Fort Film and TV City. Historically, Ningxia's mountains and rivers were so full of forts and fortresses that it is difficult to count them all, which is one of the major historical landscapes of Ningxia as a border region in the northwest. Now the ancient names of towns and villages are all synonyms for the names of ancient castles of various sizes. With the changes of the times, the names or synonyms of these large and small castles were preserved, but the vast majority of ancient castles were dismantled and withdrawn from the stage of history due to the loss of function. A number of preserved ancient castles, has been developed into tourist attractions, some of the more ancient castle ruins, ruins, still in the history of the wind and rain in the peeling, silently talking about the former glory. Zhenbei Fort Film and Television City Ningxia fortress, also known as the fortress, city, fortress, mansion Zhuangzi, camp. Wherever in Ningxia has the above mentioned name of the place, the vast majority of the history has appeared in the high walls and thick walls of the fortress building. Even in today's ancient city of Yinchuan, the early years of the state also survived the distribution of the street, with rammed earth version built as a high wall of the five fortresses, the so-called "big city set of small city". As for all over the mountains and rivers in Ningxia, in addition to a limited number of can be called the county town of the so-called ""big city"", wherever there are people living, are fortresses. Villages in the modern sense of the word, laid out largely in scattered locations along rural roads, did not exist in the history of Ningxia. One out of the "big city", is the countryside, full of eyes, in addition to the open fields and wasteland, is different near and far, different sizes, shape of the same fortress building The famous Yongning County Najiado, the original is a wall Chongbi thick fortress. The name of the fortress is called "Najiado", east and west of the coupon type fortress door. Before it was dismantled in 1958, there were more than 120 people with the surname *** and a population of nearly 1,000. The more famous Hedong Wuzhong Fort, a castle named after the Ming Dynasty guerrilla general Wuzhong, had 3,000 households, most of them ***, according to the Ningxia Chronicle published in 1947. The famous lian yu xiyou is in zhenbei fort film and television city shooting As for the continuation of the townships of ningxia townships of ancient names, without exception, all is the name of the ancient castle, some of the landforms, features named, some named after the name of a person, some named after the function. Such as Hongshan Fort, Qingshui camp to be located in Hongshan, site in the Qingshui River named; Zhang Zhengbao, Li Junbao, Wang Hongbao named after a person; Pingqiang Fort (Pingji Fort), Zhenbei Fort, Ding Rongzhai named after a function, and so on. And now the village-level units, where the ancient place names, are the history of folk architecture of the size of the fortress location, and more to the fortress owner's family name, such as Majiabaozi, Zhangjiazhaizi, Fanjiazhuangzi, Lijiayingzi, and so on. Ningxia around the fort building, a long history. The earliest can be traced back to the Western Han Dynasty. Han Emperor Yuan hunting the early years of the Han Dynasty, a large number of Han people in the Central Plains, including today's northern Ningxia Yinchuan Plain, including the river-loop area, immigrants in order to enrich the border, open the canal in order to Tuentian Valley. So long as the northern nomadic activities of the area of the Ningxia Plain, began to appear one after another, large and small settlement of immigrants in the Tuentian Castle, built in the fortress in order to live with a high wall shielding, to avoid wind and sand intrusion, less outside interference, safe and reliable, the people live happily in the middle of it. In the subsequent dynasties, some of the fortresses developed into cities, while the vast majority of the fortresses are to avoid frequent wars, defense, such as bandits and was preserved, become Ningxia people of all ethnic groups rely on the survival of their homes, become the Ningxia centralized residential construction of the dependence. In Ningxia, it has formed a kind of architectural tradition and has been continued. Fort internal scene to the *** formation of the Ming Dynasty, Ningxia war frequently, due to military needs, in addition to the historical preserved throughout the mountains and rivers around the fortress building, and built a large number of small castles used for garrison defense, and more civil and military official's name for the fortress name. As for the civilian fortress, it is more difficult to count, and more to the name of the owner of the fortress. Later, the castle lost the function of military defense, the local people will be built in the fortress walls and courtyards, as well as residential houses, to live in the room. And in these large and small fortresses built within the earth house is still the mainstream of Ningxia residential. Later, because of the war disturbance, in the early years of Ming Hongwu all migrated its people in shaanxi guanzhong, ningxia plains dotted with forts, fortresses, camps, manor all empty. But soon after the war subsided, the people returned, these fortresses are still living for the people, for the Ningxia Hui and Han people live to provide the space to exist. In a fort, there are Hui and Han people living together, there are pure Han people living, there are pure *** living, so there is " *** fort *** live, *** fort *** " folk saying. Najiado *** Temple To the Qing Dynasty, Ningxia region of Hui and Han people living in the fortress is still camped in the premises. The so-called Haicheng County (now Haiyuan County) "" fifty-six large fort ","" Pingluo thirty-eight fort, Jinling more than 500 cottages ","" Ningxia (now Yinchuan area) ninety-seven fort "" that is, the Qing Dynasty Ningxia in the mid to late Qing dynasty is a vivid portrayal of the state of fort construction. By rammed earth version of the high wall enclosing the fortress building, until the 1960s, only gradually disappeared from people's sight, now Ningxia mountains and rivers around the preserved "old fortress" and its ruins, less than a hundred. Source: network