民族的跨界现象形成有着多方面的原因,从外部因素看,有着所在地区的自然环境和政治环境因素,从内部来看,有宗教、生活资料和经济需求、血缘地缘等方面。同时,普通的民族迁移和跨界的区别也主要体现在迁移和界限产生的先后顺序,这影响着迁移的性质。 There are many reasons for the formation of ethnic cross-border phenomena. From the external factors, there are natural and political environmental factors in the region. From an internal point of view, there are religions, means of subsistence and economic needs, as well as the kinship of blood. At the same time, the common ethnic migration and cross-border differences are also mainly reflected in the order of migration and boundaries, which affect the nature of the migration.