There are many factors that lead to the slow result of blind evaluation of papers. Here are some possible reasons:

-The number of examiners is insufficient or unevenly distributed.

-The workload of auditors is too heavy, which leads to the extension of audit time.

-The professional background of the reviewer does not match the theme of the paper.

-the quality of the paper is not high, which requires reviewers to spend more time revising and perfecting it.

Administrative procedures in a school or institution.