2. find an intermediary to send it. It's much faster, but it's a mixed bag, so you need to be careful of liars. You can see the article "Cheated on behalf of papers" in Tao Tao paper net. Knowledge websites teach you how to prevent being cheated. I have read it before and benefited a lot. Relevant periodicals should check with the State Press and Publication Administration whether they really exist, so as to avoid false publications.
3. Consult a senior or tutor. Most of them also have publishing experience, and the channels have been verified by them, which should be credible.