The meeting went very well,except some obvious jokes about my previous supervisor and the his whole team!! I did my best not to take those insults personally and just laugh like the others.
I don't think that I like my new work environment,where people are so worried about their positions; even their physical locations in the lab is a huge huge matter in this new place.but never mind, It is OK for a temporary job until my situation becomes clear...
Overall, I suppose this new position will be a great experience for me in terms of improving my social communication and having new experimental research on PCF which is going to be extremely useful in the future.