Any pdf/epub reading notes to logseq workflow recommendation?

Hi everybody,
I am a big fan of reading and taking notes and I am new to Logseq.

  1. Recently I am working on moving my local notes to Logseq but I have some format issues.
    When the note is pdf, if I just copy texts to Log, every paragraph is merged.
    When the note is .md, I cannot import it directly.
    When the note is text, sometimes, all paragraphs are merged.

  2. So I go back to see what can I do with my pdf/epub viewer.
    I use Calibre to export my annotations to plain text or a .md file.
    So I loop back to step 1)

Does anyone know how to fix this?
Or maybe is there any other good pdf/epub-> reading notes-> Logseq workflow recommendation?