Do you mean 入藉試?
I did that many years ago, not sure whether it is the same nowadays.
At that time, I just need to study the book that they provide thoroughly, then I have no problem in answering any questions in the exam :)
one of my friend just got her last dec. saying after the written test, still need to do the oral and interveiw with the officers. all the written test question could be find from those chinese phone book published by Singtao newspaper..
sing tao telephone book, free to collect in some of hte chinese mall. insides always has a section for all driving written test and 入藉試 question and answer. i used to studied out from that for the exams.