What do you think of Lanzhou people? Why are there so few local people in Lanzhou?

Lanzhou people are generous and good at drinking. They are located in the northwest and have tough folk customs. In the early days of the People's Republic of China, there were many aid workers in the northeast of Shanghai. At present, most people in Lanzhou are second-generation or third-generation immigrants, but this year Lanzhou's economic development is slow, and many people choose to settle in other cities. On the contrary, immigrants from other cities in Gansu account for the majority. The real old Lanzhou people should be more in Muta Lane, Xiaoxihu, Yongchang Road and villages in the city, such as Datan and Cuijiaya.