Here are a few possibilities:
1. "Choi" as in "Choi" (surname):
* This is pronounced "choy" with a similar sound to the English word "toy," but with a slightly higher pitch. The tone is high level (平声), meaning it stays on a single pitch throughout the word.
2. "Choi" as in "Choi Sum" (a type of Chinese vegetable):
* This is pronounced "choy" with a similar sound to the English word "toy," but with a slightly lower pitch. The tone is low level (阴平), meaning it stays on a single pitch throughout the word, but lower than the high level tone.
3. "Choi" as a transliteration of a different Chinese character:
* There might be other Chinese characters pronounced similarly to "choi" but with different tones.
Therefore, to give you an accurate pronunciation, I need to know which character you are referring to. Could you provide more context or the character itself?