None

After taking a bunch of tests, I had an interview with HR.

It seemed that HR had not reviewed my résumé beforehand and went straight into the interview, with a very unpleasant expression.

They only repeated the information in the interview invitation. When I asked about the detailed job duties and salary structure, they only gave a rough overview and answered very vaguely.

They even said they would explain everything in more detail later.

I was invited to the interview, so I took time off work and prepared for it, but I felt absolutely no professionalism from this company's HR or respect for the interviewee.

After a brief interview, HR simply asked me to go home.

This is the most unprofessional company HR department I have ever interviewed with. I recommend not wasting your time.