hiya
There are many reasons to learn how to divide hiya into syllables. Separating a word like hiya into syllables is mainly to make it easier to read and pronounce. The syllable is the smallest sound unit in a word, and the separation of the hiya into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate hiya into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce hiya more accurately. Furthermore, separating hiya into syllables can also be useful in teaching grammar and spelling, as it allows students to more easily understand and apply the rules of accentuation and syllable division.
In the case of the word hiya, we find that when separating into syllables the resulting number of syllables is 1. With this in mind, it's much easier to learn how to pronounce hiya, as we can focus on perfecting the syllabic pronunciation before trying to pronounce hiya in full or within a sentence. Likewise, this breakdown of hiya into syllables makes it easier for us to remember how to write it.