Yi was born in Dosan-myeon,
Andong on May 18, 1904. Yi was a descendant of the scholar Yi Hwang, better known as
Toegye. Yi completed his basic education in Andong, graduating at the age of 15 in 1919. In 1920, at age 17, he moved with his family to
Daegu and married. Yi became a teacher at the academy at which he studied, but in 1924 left for Japan to study in University. In 1925, Yi returned to Daegu and along with his brothers and joined the
Heroic Corps, an association formed in response to Japanese repression of the Korean Independence Movement. The Uiyoldan was associated with acts of sabotage and assassination. Yi moved to
Beijing in 1925/26, likely because of this association, and studied at
Sun Yat-sen University in
Guangzhou. In 1929, Yi began to work as a journalist, and in 1930 he published his first poem. "Horse", in
The Chosun Ilbo. From 1931 to 1933, he studied in China, but continued to maintain contacts with the Korean resistance. In 1935, he began to concentrate on his writing, publishing both poems and critical essays. Accounts have Yi being arrested a total of 17 times. ==Death==