lots of questions, two interviewers involved , the whole process took more than four hours , including oral and written quizzes, the interviewers were very polite and kind but the questions were very difficult , and not enough time was given to solve them. lots of questions, two interviewers involved , the whole process took more than four hours , including oral and written quizzes, the interviewers were very polite and kind but the questions were very difficult , and not enough time was given to solve them.