Kim dikatakan pergi belajar fizik nuklear di Universiti Colorado ketika berusia lapan tahun
“saya merasa sangat sunyi kerana berada di negara orang, dan kerana tiada sesiapa boleh menemani saya kerana di universiti semuanya orang dewasa, tidak tempat untuk budak-budak seperti saya” katanya

At three years old, he was able to solve calculus problems, and also published a 247-page best-selling book of his essays in English and German, as well as his calligraphy and illustrations.^[4][1] By the age of five, Kim could speak Korean, English, French, German and Japanese.^[5]

Kim allegedly went to study nuclear physics at the University of Colorado when he was eight years old

I was really lonely. No one ever made friends with me. After work hours, I could exercise and enjoy my hobbies, but no one could accompany me. I came from another country and I was young, so there were no seats for children even though everyone was an adult.

https://en.wikipedia.org/wiki/Kim_Ung-yong