The Migration Traits of the Immigrants in Southwest China in the Qin and Han Dynasty and their Contribution to the Development of the Border Area

In the several hundred years of the Qin and the Han Dynasty,southwest China entered an important stage of development.The immigrants to this region through various channels had their own traits of migration. They made great contributions in terms of population growth,the establishment of prefecture and county,the introduction of advanced technology,the diffusion of feudal culture,the development of the border area,the forming of the territory and the stabilization of the local region.