100% correct. Cantonese speakers write in Chinese just as Mandarin speakers do (though they pronounce the characters differently). Written Cantonese, as it we

100% correct. Cantonese speakers write in Chinese just as Mandarin speakers do (though they pronounce the characters differently). Written Cantonese, as it were, is cobbled together from certain Chinese characters and, of all things, a few English letters: perhaps mostly used nowadays to portray Cantonese dialogue in comic books.