* Wū: The "ū" is a high back rounded vowel, similar to the "oo" in "moon" but slightly more tense.
* hàn: The "hàn" sounds like "hahn" in English. The "a" is an open vowel, similar to the "a" in "father".
Therefore, a close approximation in English would be Woo-hahn. However, it's best to listen to a native speaker's pronunciation online for the most accurate rendition.