Canadian Solar interview questions

I had 2 rounds of interview: first with the HR and second with their process technician team in China. HR walk through my resume. The process technician team had me broken down my resume and tried to find relevant keywords that relates to the required skills they need for their manufacturing site, like experience with KPIs and SPCs.

So, they are starting a new plant in Indiana, US, and will be starting up there after their plant in TX, USA. Round 1: HR/Recruiter interview for 1 hour with general questions, why looking to leave current role, why canadian solar etc. Round 2: Hiring Manager interview (Scheduled for one hour): Started normally as related to my experience, as I hold similar experience. But 5 minutes in I realize the interviewer is trying to put me down and being subtly condescending, which was a major, major red flag. He asked me 'Do you even know what technology you are working on, lol' and when I answered, he shifted back to why I was planning on leaving my current company (which I had no reason to actually). After answering all the questions thrown at me, I could see that the interviewer was genuinely trying to put me down, which is why I lost interest and showed my disinterest in the role at the 30-minute mark. I asked general interview questions and then exited. MAJOR RED FLAG manager for the Indiana, US plant.