Kim Dong-hui "passed 250 to 1 and passed 'Math'...I cried with my mother." on February 25, 2022 Choi Min-sik Europe In Our Prime Kim Dong-hui Mathematician +
Choi Min-sik "Morning toast and coffee fall...now cut off" (Math letter of Strange Europe) on February 15, 2022 Choi Min-sik Europe In Our Prime Kim Dong-hui Mathematician Park Dong-hoon Yoon Seo +