The main reason why the immigrants from the Three Gorges reservoir area go to Shanghai is that the environmental capacity of the A reservoir area is insufficient, and B Shanghai is in urgent need of l

The main reason why the immigrants from the Three Gorges reservoir area go to Shanghai is that the environmental capacity of the A reservoir area is insufficient, and B Shanghai is in urgent need of labor. Why choose a instead of b? If Shanghai urgently needs labor, it doesn't have to be transferred from the Three Gorges! Besides, there are many technology-based industries in Shanghai. Do you still need so much labor to develop them?

It is precisely because of the construction of the reservoir that the Three Gorges migrants "have nowhere to go" and are forced to move, and may also go to Shanghai. Shanghai may need labor, but it is not the main one. Shanghai has a large population and small green space, which is too big for so many people.

Furthermore, the question is about the immigrants in the Three Gorges reservoir area. First, consider the Three Gorges reservoir area. Why are you moving? Is it related to the reservoir area? Also, this chapter was written together with textbook A. Have you read the chapter of Shanghai Three Gorges? (mainly optimistic about textbooks)