First round with the hiring manager simply walk through your background and experience. Mainly focus on the resume and how well you know about the stuff you have done. Make sure you have 100% know about all your experiences and the connection of its theory.

I was invited for an interview for a period of 30 minutes meeting. The interviewers were from Asia different sites having the hiring manager from China. I am sure they did their background check and looking for inconsistencies with my story. They don't seem serious to hire but instead made you a notion that you are an arrogant or proud applicant. Some questions seems irrelevant and looking to dig some drama in a grand scheme. I hope this only happens to me.