None at all
At the beginning, you are asked to complete a personality-traits assessment and read a statement.
It says that if you want to resign, you must apply before the end of March each year, and you can officially leave only in June.
It also says that the salary during the three-month probation period is 25K, which can be extended for another three months; the official base salary is 30K, but this excludes the employee-paid portions of labor and health insurance, as well as a 300-dollar training-center fee paid by employees.
During the interview, the supervisor's attitude was extremely poor. Even though they had asked me to come for an interview, they only asked what my previous job was and what my duties were. After I answered, they said they did not know why I had chosen this job, said I was unsuitable, and told me to leave. I was completely stunned—then why did they ask me to come for an interview in the first place??? My previous job and duties were clearly already written on my résumé.==
How to prepare for the interview:
You may need to ask around first and think from multiple angles about what wording the open-minded supervisor actually wants to hear before they will consider hiring you.