The rejection of the paper review indicates that the quality of the paper is not up to standard and needs to be revised.
The second interview is usually an external review by experts, mainly to see whether the article has research value, whether there are professional errors, and whether the experiments or data in the article are scientific and true. In the whole process of publishing a paper, there may be many reviews. The more times you withdraw, the more times you review it. Therefore, to a certain extent, it affects the length of the whole paper publishing cycle.