How many songs do I need to take in the erhu exam?

I learned erhu, and it has reached 10 level. If I take the grade test, I'll start with an etude, and then draw lots to choose the music of your grade, usually one, and I have to recite it! Then, if you are above band 8, it depends on the spectrum, and band 7 doesn't need it! As for skipping the exam, I skipped the exam for a year, but it seems that I can't do it recently. You can sign up at the Conservatory of Music first, and then act according to circumstances!