Voluntary reporting is a project before the college entrance examination, a necessary project for candidates to enter the university, and it is related to the fate of the majority of students. In the college entrance examination volunteer form, the column of "Whether the major obeys adjustment" is set up under colleges and majors. Whether to fill in "obedience" or "disobedience" requires candidates to play a game between the school and the major.
Of course, the basic premise here must not be ignored, that is, there must be a reasonable grade difference between the four universities A, B, C and D in parallel volunteer, with a distance of 5 to 8 points from high to low.