If a college wants to enter a university, it must meet many hard conditions, such as the number of full professors, the proportion of doctoral teachers, the number of undergraduate majors, and the average teaching space per student. However, one of the most critical indicators with the highest threshold is that the college must be an authorized unit for master's degree awarded by the the State Council Academic Degrees Committee, and at least three master's graduates must graduate. This alone, many colleges and universities can't get by for ten or eight years. Therefore, the question of how many years a college can be promoted to a university depends on the specific situation of each college. The above is for reference only.