What kind of frontier strategy does the real border of immigrants reflect?

As an important measure to strengthen border defense, "immigration and border consolidation" embodies the border defense strategy of "border consolidation", conforms to the objective needs of border defense management, and has far-reaching significance for developing and consolidating border defense. First, it fundamentally solved the difficulties of defending the border and defending the central plains dynasty. With the development of frontier immigrants, settled agricultural bases have gradually formed, and water conservancy projects and road construction have been carried out one after another. Settlers can deal with the enemy for a long time, effectively resist the harassment of nomadic people on the central plains agricultural area, and ensure the safety of the imperial political and economic center. At the same time, it also extended the control power of the imperial court to the frontier, expanded the social foundation for ruling the frontier, and took the first step to achieve great unity and "turn summer into a foreign country." Second, it is conducive to enhancing national defense potential, consolidating border defense, and achieving stability and development in border areas and the mainland. A large number of immigrants settled in the border areas, which promoted the economic development of the border areas, provided an extremely important economic foundation for strengthening military construction in the border areas, solved the problems of population, soldiers and military supplies in the border areas, guaranteed the life of border guards and reduced the pain of moving inland. In this sense, the strengthening of border defense has actually effectively defended the mainland, so "solid border" is also "solid inside". In this regard, Mr. Ge once pointed out: "The success or speed of the expansion of the Central Plains regime and the Han regime to the surrounding areas depends to a large extent on the successful implementation of immigrants and how many immigrants can finally stay stably. Because it goes without saying that military conquest, even exploitative occupation, will inevitably cause dissatisfaction among local ethnic groups. Without the support of a considerable number of Han immigrants, the new local administrative institutions will inevitably not exist. More importantly, immigrants engaged in agricultural production can pay taxes to meet the needs of local officials and garrison troops, without having to allocate food and other materials from the mainland, which will not become a burden to the court. If the conditions are right and the number of immigrants reaches a certain level, there may be some surplus grain to provide material support for the development of further regions. " In addition, a large number of immigrants settled in the border areas, which changed the resident structure in the border areas, promoted ethnic integration, improved the regional economic model and structure, and thus promoted the progress of the border society. Historically, apart from government-organized immigrants, the Central Plains was the center of struggle, and the destruction of war was often the most dramatic. "There are white bones everywhere, and there are no crows in a thousand miles" was a portrayal of the image of the Central Plains for a long time. Therefore, "immigrants moved to the south of China in waves, that is, to the surrounding areas of the Central Plains. The arrival of Han residents has led to the migration of aborigines to more remote areas, or because the distance between political, economic and cultural centers and remote areas has been relatively shortened. However, the superiority of farming economy makes the frontier residents settle more, the combination of residents and land is closer, the feeling of home is increased, and the centripetal force is improved, so the ruling foundation of the empire in the frontier is more stable.

In a word, standing at the height of maintaining China's unity, the reclamation and "immigration to the real frontier" really combine the governance and stability of the frontier with the stability and development of the whole country through the management strategy of developing the frontier to protect the frontier. Because the key to the strength of the frontier lies in the word "strong", and the fundamental basis of the strength of the frontier lies in the relatively developed frontier economy, convenient transportation and the continuous improvement of people's living conditions in the frontier areas. Only in this way can the country have sufficient and reliable human, material and financial resources to engage in frontier management and the frontier can be truly powerful. On the contrary, in history, the Song and Ming Dynasties pursued the strategy of "weak frontier" and tried their best to move the border people into the mainland, making the border empty and empty, leaving nomadic people "unprofitable". This method of seeking border stability at the expense of border development has backfired. The border is weak and the national defense is not guaranteed. China's modern frontier management also has such a lesson. Compared with ancient times, the modern frontier situation has undergone a qualitative change and an unprecedented crisis has emerged. However, although a large number of frontier problems have different manifestations, the fundamental crux is still the low level of economic development in frontier areas. In this sense, land reclamation and "moving to the real border" are undoubtedly the most precious experiences in history.