Feng Cha interview questions

Applied online, then a about a week or so had an interview. The only odd thing was that he sent that email on Labor Day (possibly a red flag). I could mean that they don't close for most holidays?

They as questions about your work ethic and as well what you can bring to the table if given the job. It probably took around 18 minutes max, for the interview. The tension was not bad, it felt as having a normal conversation with a person.