There is no option at the moment for one to select Chinese(Cantonese) in the spoken languages section. If this could be added that would be awesome 🙂
I'm sorry I didn't see your messages before
A selection has been done when the site was launched a year and a half ago (since there has to be a limit!) ; only official languages were added, that's why some other languages are not mentioned in the list.
The second problem is that the site is in 9 languages right now (10 soon), so adding a new language would involve a tedious translation into ALL the languages currently available 🙂