according to a manuscript, write down abstract within a certain time (2 hours). Followed by writing a proposal and describe what you would do during PhD studies. Usually around 4 people take turns to ask qusetions.

Presenting your previous research, and discussion on recent or keymark articles with the interviewers. Generally, no right or wrong answers; as long as the line of arguments/thoughts are reasonable; as to gauge your understanding of literature seems to be the goal and whether it is at the right level for research.