Among them is Ri Un Song of Pyongyang Secondary School No. 1 who bagged gold medals two times running in the 49th IMO for 2008 and 50th IMO for 2009 held in Germany in July.

He attracted the attention of people for his good results in the national mathematical contest.

From the childhood he was called a student with many questions by his teachers. When a teacher taught one thing, he raised many questions on the related matter.

In the course of raising questions and solving them, his mathematical ability has improved considerably.

He likes composition and reading and is good at physical culture. It is his hope to become a competent scientist.