1. How is "Udin" pronounced?
"ū/dĭn" It's also spelled "Yudin" by other people. It's Russian derived which most likely means "Jew".

2. How is Yoonmi Kim Pronouced?
"Yoŏn" "Mee" The "ee" sound is a short ee like an ĭ sound. That sound is the same as "kim" which is not as the "Kim" in Kimberly.