The national line is the lowest line set by the Ministry of Education when the scores of all candidates are summarized to the Ministry of Education according to the registration and examination situation in that year, and according to the number of students enrolled in that year, the number of people on the line is guaranteed to exceed 20% of the number of students enrolled.

That is to say, if 300 people are admitted and 100 people are admitted, then the score of candidates ranked 120 is the score line. Of course, more factors will be considered in reality.