2 round, first round is written test, second round is face to face interview with 2 interviewers. I went to the interview at 6-7pm. It is an optical Hong Kong old office, packed and equipments were old. And most of the staff was still in the office. Obviously they were working overtime. The 2 interviewers were not respectful to the candidate. They keep laughing whatever i answer. It is a waste of time.