Because big cities have good medical facilities and it is convenient to see a doctor.
There are many job opportunities in big cities, making it easy for people to get re-employed.
The big cities have a lot of room for development and it is easy to make a name for yourself.
I think this is the reason why many people choose to stay in big cities.
Many of my classmates chose to stay in the north, and most of them couldn't afford to buy a house even when prices were cheap in Beijing because of their poor families.
Now it's even more difficult to afford a house.
I've asked them why they don't choose to go home and start a business or work, at least they have a comfortable life and don't have to worry about food, clothing and shelter.
They then told me how good Beijing is, such as easy access to medical care, convenient transportation, and the ability to promote themselves and have room for advancement.
Several of my classmates are now employees of relatively well-known companies, earning about 20,000 a month.
If Beijing's housing prices stay the same, with their strength, they will have little problem buying a house in Beijing in the future.
Of course, there are students who are not doing as well as they would like, but they still choose to stay and persevere because they feel that as long as they have the opportunity, they will be able to soar.