These two books contain real questions and simulation questions over the years. Nowadays, many schools adopt the tactics of asking questions to senior high school students to improve their problem-solving ability by the amount of questions. Both "53" and "Tiba" have a large number of questions for students to practice, and in fact, whether it is "53" or "Tiba" or other books, the questions are basically the same, because they are all based on the reminders of the college entrance examination.