It's quite difficult. The physics questions are biased. I don't know what's going on. The first big question looks simple, but it can't be solved, which affects most people's later performance. The 28 questions of chemistry have subverted the ideas of all candidates, and basically they can't get full marks. Therefore, it is quite difficult to manage Brown this time. The only good thing is the big biological problem, which can make people feel at ease.