应该是mdpi出版社吧，你的应该有问题。我投的数学，投稿系统里一直在。

顶

我给编辑发信询问状态是否正常，给我如下回复，大家怎么看
Now, the paper is pending review and we will invite scholars in this
field to help us review this manuscript. Once we receive enough comments
from reviewers (at least two qualified review reports), we will let you
know soon. If you happen to know any scholars who could potentially
serve as reviewers, please also do not hesitate to recommend to us.
Thanks for your help in advance. If you have any questions, please feel
free to contact us.

Kind regards，

有中国区电话的，可以打电话过去问，我之前就咨询过一些问题，编辑态度很好

编辑部就在北京吧。打电话问问