The exam is passable on the first attempt if you do your homework, but you will not get 100% as some of the questions are unintelligible. Around 60% will get through on the first go.The American origin is easy to spot in the regs with terms such as “flag carrier” being used and references to 4 engined piston aircraft.
Then exam is done on a computer and you get the result straight away, typically a question will have three multiple choice answers of which you can usually eliminate one straight away. Most candidates seem to be able to finish within the allocated time. Some useful points on flying in China are covered in the study material but it’s basically cram, regurgitate and forget. Any questions and answers you can remember will be appreciated by your agency to help future candidates.
Mobile phones and watches need to be left outside the exam room, smart watches give the opportunity for cheating.