The AC was well organised. It was the same as all other AC. There were 3 parts, group discussion, one-to-one interview and a technical presentation. Group discussion and the interview were very normal. For technical presentation, it would be better to talk about an easy understanding and interesting project. I chose a bad one because the interviewer seemed to know little about it. And I did not give enough detail information. Please remember the interviewer is not your supervisor who knows your project well and knows all the background knowledge.