Parallel volunteer implements the principle of one-round bidding. After the same batch enters the admission procedure in parallel volunteer, candidates' files can only be filed in a parallel voluntary college. When the candidate's parallel volunteer meets the requirements of the admission institution and the school has an enrollment quota, it will be locked, and the rest of the parallel volunteer will be automatically ignored.
Parallel volunteer follows the principle of "candidates first, candidates themselves first and volunteers first". The institutions in parallel volunteer reported by candidates are parallel. Once the candidates' scores meet the requirements of parallel voluntary institutions, these institutions are all potential parallel voluntary institutions for candidates. However, the search for parallel institutions is carried out according to the order of institutions arranged by candidates when filling in parallel volunteers, that is, from A to B, C, D, E and F.