Thank you for your answer that just answers perfectly my doubt!
I do know how they are called in china, but i do have to use the occidental names to compreend the basis.
So they mistake and use “fermentation” to refer to “oxidation” quimically talking they are so diferent like the sea is diferent from earth. Is grave mistake in the books and i”m scared because i remember majority of books comited that mistake that can confuse any reader.
Anyway, again: many thanks for erasing my doubt…it was really my greatest doubt.