Proof of concept: import text/EPUB, rewrite into natural Cantonese narration with MiniMax, then read it aloud with browser speech synthesis.
1. Import book text
2. Rewrite for Cantonese listening
3. TTS test
I checked your full MiniMax API voice list: only 6 native Cantonese voices are exposed on this account right now. Professional Host (F) currently sounds best in your testing, so I moved it to the top.
Browser TTS note: quality depends on the voices installed on your browser/device. On desktop Chrome/Safari with Cantonese voices, this is enough for a first proof of concept.