Why can't Foxconn recruit employees after posting money?

Maybe every place is different. Anyway, Foxconn here is not unable to find employees, but recruits a large number of employees every year. Then after a while, I began to talk about age and began to lay off a lot of people. This is what an internal employee said, which was discovered in a secret investigation of campus personnel entering the society.

In fact, Foxconn basically recruits some front-line workers, which means basically anyone can, but he always starts to lay off employees when the wages of you old employees start to rise. Although there are many people recruited, more people will be laid off in the end. Even people who don't have long-term stable jobs won't consider such unstable jobs, let alone others.

There is a Foxconn not far from our school. There will be many Foxconn recruiters at the bus station, but the students all say that the treatment there is extremely low, especially those poor students who have to work part-time in winter and summer vacations.

So I think it is understandable that some places can't recruit people.