Phonology
Generally speaking, Cantonese is a tonal language.
The de facto standard pronunciation of the Cantonese language is that of Canton (Guangzhou), which is described at the Cantonese phonology article. Hong Kong Cantonese has some minor variations in phonology. These differences include the tendency of Cantonese vowels to be further back than their Mandarin analogues, such as M. ai, ui, vs. C. oi; M. ei vs. C. ai; M. a, e, ao vs. C. o. For consonants, some differences include M. xi, ji vs. C. h, g; M. r vs. C. y; and a greater syllable coda diversity in Cantonese (such as syllables ending in -t, -p, or -k).
Read more about this topic: Cantonese