It's best to ask questions about working hours, overtime and social security accumulation fund before the interview. This will give you a better understanding of the company's welfare and work system, so as to decide whether to accept this job opportunity. In addition, knowing these questions in advance can also make you more confident and clear in the interview and avoid unnecessary misunderstandings and contradictions.
You can contact the interviewer or HR before the interview and ask for some basic information such as company benefits and working hours. If you have any questions during the interview, you can also ask the interviewer directly. When you successfully pass the interview and get a job opportunity, you can communicate with the HR or direct supervisor of the company to learn more detailed work arrangements and benefits.