Why does Guodian need a Beijing hukou for recruitment?

Many companies, whether state-owned or private, will give priority to having local accounts, and our supervisor has also expressed this idea. It is said that the salary of clerks is not high, and the job with Beijing hukou basically belongs to locals and eats at home. Outsiders, like us, usually spend a lot of money renting a house to eat, and there is not much money left in that salary. Experience shows that such a low salary can't keep people, so we have to keep changing. But the paperwork is complicated, and it takes time to cultivate a handy one. They are too much trouble.

In short, it is the reason why companies usually consider employee stability in combination with position and salary.

Do you think that Guodian recruiting technicians didn't ask for a Beijing hukou?