Some authors want to check the manuscript after receiving the employment notice, but when they ask the sender, the other party says they can't check the manuscript, so the authors can't help but worry about the authenticity of the employment. What should I do?

In fact, it depends on the situation, but it is generally possible to check the manuscripts, but it does not rule out that some related manuscripts and channel manuscripts can't be found (core and periodicals are more common, and if they are distributed on behalf of others, most of them can't be found, and as for general periodicals, they can basically check the manuscripts).

If the other party makes it clear that it can't check the manuscript, ask the specific reasons and see why it can't be checked.

Can't check the manuscript, how to judge the authenticity of the employment notice? Personally, I think this can only depend on the agency the author is looking for. For example, the periodicals he recommended to you are regular (check with the State Press and Publication Administration), and you can also observe them during the communication with him. If you are always vague and avoid answering your own questions, you should be vigilant. One more thing, there is basically no deposit for general publications. If you meet an intermediary who collects a deposit for issuing ordinary publications, the other party may be a liar.