Keep the roller surface clean. Before the exam, check whether the pen leaks, whether the ballpoint pen leaks oil, and whether the color of the pen may make the examiner unable to see clearly. A clever calligraphy can add a lot of color to a work. Not only the composition, but also any subjective question, the quality of writing may have a certain impact on the score. Words can be ugly, but not bad. Problems such as big or small handwriting or dense arrangement when answering questions may have a negative impact on grades.