* Huī (hui1): This is pronounced with a high and flat tone, like the "ee" in "bee" but slightly shorter.
* Huì (hui4): This is pronounced with a falling tone, similar to the "way" in "away" but ending on a lower pitch.
Therefore, the pronunciation of "Hui" is either "Huī" or "Huì", depending on the context and the specific tone.
To know how to pronounce "Hui" correctly, you need to know the tone it's written with. For example, "慧" (huì) is pronounced with the fourth tone. However, "会" (huì) is also pronounced with the fourth tone, but it has a different meaning.
If you are unsure, it's always best to ask a native Chinese speaker or use a pronunciation dictionary.