When China was still in classical localist culture, on the one hand, the concept of hometown firmly restricted population migration, and on the other hand, population migration was free. The migration of the population may not necessarily lead to the development of the resettled place. However, inspections In human history, it can be said that all the developed areas must be the result of the migration of people. The migration of West Asia has the glory of ancient Greece. The migration of the European continent has British Isles. Rise. With the tide-like breakthrough of the Kanto, the prosperity of the Northeast region after the late Qing Dynasty. The prosperity of the region is inseparable from the creation and construction of the migrant population. Regarding this text, what is the following understanding? ['Mobility between regions, migrants are "foreign population".', 'In ancient China, population migration was restricted.', 'Migrants should not be discriminated against or excluded.', 'Without population migration, there will be no regional development.']