What are the disadvantages of single move?

See the advantages and disadvantages below:

The advantage is that you can get into a good first-class college with low scores. You can avoid the edge of the college entrance examination and increase your chances of going to college. Candidates who are admitted to higher vocational colleges will no longer take the general college entrance examination that year and will receive university admission notices in advance.

The disadvantage is that the single-admissions admission plan is only for higher vocational colleges, and undergraduate colleges do not participate in the single-admissions admissions plan, which means that if you take the single-admissions exam, you can only go to a junior college. If you pass the single-entry examination, you will not be able to take the summer college entrance examination and spring college entrance examination. For some people who have been in high school or technical secondary school for three years, they may have some regrets about not taking the college entrance examination.