Over generations, their origins will change. The popularity of Mandarin will also gradually drive local dialects out of our language communication system. A few years from now, those dialects and slang that linger in the countryside may become something that must be learned to understand, just like Tang poetry and Song lyrics. As the flow of people continues to accelerate, the column of place of origin will completely disappear from all forms, and the nostalgia related to place of origin can only become a sigh of ancestors hiding in the graves in the countryside.