A.D. 1368, when the Ming Dynasty was founded, Zhu Yuanzhang sent the Duke of Song, General Sheng Feng, to the west to pacify the roads in Hexi. In the Ming Dynasty, Yongchang Road and Xiliangfu, the military and political institutions of the Yuan Dynasty, were abolished, and Liangzhouwei was established in Liangzhou, which belonged to Shaanxi Aviation Department (Ming Gansu belonged to Shaanxi Chief Secretary).
Liangzhou, the ruling place of Liangzhou Wei, has always been an important town to defend the throat of Hexi Corridor and an important place for multi-ethnic competition. The gain and loss of Liangzhou is related to the overall situation of northwest frontier defense. Although the Ming Dynasty overthrew the rule of the Yuan Dynasty, the remnants of the Yuan Dynasty were still very strong, and the center of gravity in the northwest was north of Liangzhou. If the remnants occupy Liangzhou, the Ming Dynasty will be in an extremely unfavorable position strategically. Therefore, the Ming Dynasty paid special attention to the safety and protection of Liangzhou. In the northeast of Liangzhou, from east to west, a hundred miles of solid side walls were built on the basis of the Han Great Wall, connecting Gulang in the east and Yongchang in the west; There are warning beacon towers and garrison logic stores along the Great Wall. In A.D. 1377, Pu Ying, commander-in-chief of Liangzhou, carried out large-scale reinforcement and repair of Liangzhou City for the sake of military defense, and raised the original wall by 1 meter. In 139 1 year, Song Sheng, the commander-in-chief of Liangzhou City, built the West Gate on the basis of the original three gates in the east, south and north of Wuwei, three gates in the east, four suspension bridges in the north, dug a moat more than 6 meters deep, built 36 watchtowers and logic shops around the city wall, and built a tall building on the west side of the north city wall. In A.D. 1574, Liao Fengjie, the governor of Gansu Province, and Shi, the chief soldier, spent another two years building a wall with bricks. At this point, Liangzhou City has become a veritable "Jincheng Tang Chi". While building a strong city, mobilize migrant workers to build castles and villages, establish a system of defense and self-defense. Castle and stockade are integrated, cultivated at ordinary times and defended in wartime. Therefore, villages named after forts and stockades in Liangzhou (from the Ming Dynasty) are all over the country. The establishment of Jiabao in Baozhai has played an important role in protecting the environment and people. Due to various effective measures taken, and the Ming Dynasty was very cautious in selecting the generals stationed in Wuwei, such as Puying, Song Sheng, Jiang, Mao Zhong, etc., all of them were excellent generals who were familiar with the border situation and were brave and good at fighting, so the Ming Dynasty won a series of wars and gave full play to the important role of Liangzhou as a strategic location.
At the beginning of the Ming Dynasty, due to the remnants of the Yuan Dynasty and the frequent invasion of some ethnic minorities, wars were frequent and the number of registered permanent residence decreased sharply, which seriously affected the development of production and the consolidation of border defense. In this case, the rulers of the Ming dynasty began to implement large-scale immigration. In the early days, hundreds of thousands of residents from Hebei, Henan, Shandong, Shanxi and other places moved to Hexi, settled in fields for production and enriched the border defense. In the middle and late period, due to the famine in Gyeonggi, they also immigrated to Lianglong area to solve the problem of food and clothing. At that time, immigrants were managed by local governments and cultivated land, which was called "people's village". At first, they didn't pay taxes for three years, and after three years, the taxes were relatively light. Wasteland that is not within the quantity can be cultivated and never paid taxes. These measures have greatly mobilized the production enthusiasm of immigrants and local people, and greatly promoted the development of agricultural production and economic recovery.
Liangzhou still retains some place names, such as Tundi, Tunzhuang and Wujiatunzhuang. Many genealogies and genealogies record the fact that their ancestors moved to Liangzhou, and the saying that their ancestors came from Shanxi Sophora japonica is widely circulated among the people. These situations are actually the historical reflection of the implementation of the immigration policy in the Ming Dynasty. Especially the legend of the big pagoda tree, has a very exact argument.
This pagoda tree cherished by the whole people is next to Guangji Temple in Erli, north of Hongtong County, Shanxi Province. There is a stone tablet beside the tree. The crown of the monument is engraved with the word "commemoration" carved by Panlong, and the five official words "land of ancient locust trees" are engraved on the monument. The inscription records the situation of immigrants in the Ming Dynasty and their diet. In the early Ming Dynasty, when emigrating, a bureau was set up in Guangji Temple. Immigrants from all over the country gathered under the big pagoda tree, and then arranged teams to go to various places, and then the local governments that accepted immigrants concentrated on resettlement. Liangzhou still has village names such as "distribution" and "resettlement", which was actually the location of immigration management and resettlement institutions at that time. After all, it is difficult for immigrants to leave their hometown and relatives where they raised themselves and live in a foreign land thousands of miles away. When the ancients broke up, they used to give gifts to each other. "Liu" means nostalgia. Immigrants brought a locust tree seedling and planted it in a new land to show "nostalgia". Immigration activities are mostly carried out in late autumn. At this time, the locust tree leaves, and the old man's nest on the tree is very eye-catching. When the immigrants left, they stared at the towering ancient locust trees, and the old people living among the branches kept moaning, which made them reluctant to leave and looked back with tears. People who migrated from here lived in other places, passed on the story of the big locust tree and the old man's nest in Hongdong to future generations, and told the feelings of missing their homeland. "Asked where my hometown came from, Shanxi Hong Tong locust tree. Ask me where my hometown is, the old man's nest under the big locust tree. " Over time, the story of Hong Tong Sophora japonica is well known to all women and children. Sophora japonica seedlings brought from Hongdong to various places have also taken root and sprouted in the new land, flourishing. There are many locust trees in Wuwei, which is said to be related to this. Among many locust trees in Wuwei, the one in Jasmine Zhang Fort, Qingshui Township, east of the city 10 km is the most famous. It has a history of more than 500 years, with a tree circumference of 6.9 meters and a tree height of 15 meters. It has a high crown and lush leaves. Every year, new branches sprout, people go to watch them, and some people burn incense to worship them. This is also a memory of their ancestors. 1989 April 2 1 day, the first people's congress of Wuwei city made a decision to regard Sophora japonica as the city tree, which fully expressed the wish of Liangzhou people to love Sophora japonica and remember their ancestors. Now, the streets in Liangzhou City are shaded by Huaiyin and the fine trees are lush, making the ancient city colorful.
In the Ming Dynasty, many water conservancy facilities were built and special water conservancy management institutions were set up at the same time of immigration and resettlement, which brought water conservancy into the unified management of immigration and resettlement, greatly promoting the development of agricultural production. Commerce is also very developed, and a "tea-horse department" has been set up in the border areas, specializing in tea-horse trade and a special tea-horse market. In the fifth year of Hongwu in the Ming Dynasty (1372), Lanzhou Yellow River pontoon bridge was built, Guanma Avenue from Lanzhou to Hexi was opened, and many post stations were set up along the way. These measures have played a positive role in developing agricultural production, promoting commercial circulation, strengthening national unity and promoting economic and social development. The Ming Dynasty attached great importance to the development of culture and education while developing economy. The existing ancient buildings in Wuwei include Confucian Temple, Haicang Temple, Dayun Temple, Lianhua Mountain, Luosi Temple and Jinta Temple, all of which were newly built and added in the Ming Dynasty. Liangzhou is one of the most well-preserved areas in China in the Ming Dynasty.