[1] His father is Chan Kyung Sung, a poet and professor of English literature, whose 'willingness to experiment to the extreme' influenced him greatly.
[2] He inherited from his father his enthusiasm towards strange and convoluted experiment on language that goes beyond the realm of a poetic style.
He entered the Department of French Language and Literature, Seoul National University in 1986, and finished his doctor's degree there in 1996.
Sung was the leader of the band 3rd Line Butterfly and recorded many solo albums, such as Namuga doeneun beob (나무가 되는 법, How to Become a Tree) that came out in 1999 and Dangsinui norae (당신의 노래, Your Songs) in 2008.
"[4] In 2007, he became the director of the multi-cultural space Moonji Cultural Institute, Saii, and gave lectures for the general public titled Creative Listening, which incorporated a variety of genres like Korean traditional poetry, French poetry, and Korean popular music.
[8] His first poetry collection, Shoping gatda osimnigga (쇼핑 갔다 오십니까, Did You Go Shopping), published in 1998, deals with the features of the digital age like the internet.
In the poem "A, B, C, D, E, F, geurigo X ui norae (A, B, C, D, E, F, 그리고 X의 노래, The song of A, B, C, D, E, F, and X)," digital signals wipe out the specific realities of individuals and refer to them by symbols.
[9] The three main words of his second poetry collection, Yuri iyagi (유리 이야기, Story of Glass), published in 2003, are 'green rubber monster,' 'glass,' and 'me.'