I'm always amazed that, although Cantonese is about as commonly spoken as Italian, so little written corpus data exists for it (since most Cantonese write in a form of Mandarin Chinese).

For example, here there are all kinds of useful things we can do with these 157 sets of word vectors, but Cantonese escaped the list because most of its transactions happen off the page.

https://en.wikipedia.org/wiki/Written_Cantonese