Fortunately, the interviewer said that after staying for two years, the monthly salary could reach 30k. I don't know if that's really true.

During the probationary period, the salary is 24k with no labor or health insurance.

The probationary period is not fixed; it is basically three months, but for capable people it may be only one month.

They kept emphasizing that not having labor or health insurance is only a matter of having slightly less protection and does not make much difference.

After passing the probationary period, the starting salary is 25k depending on your abilities. You only become eligible for an annual bonus after completing two years.