In 1896, Ahn moved to Seoul where he attended Gusae Hakdang, a missionary-sponsored school in Seoul run by Horace G. Underwood and Rev. F.S. Miller and eventually converted to Christianity over a period of four years.
In 1896, Ahn moved to Seoul where he attended Save the World School (Gusae Hakdang), a Presbyterian missionary-sponsored school in Seoul run by Horace G. Underwood and Rev. F.S. Miller. Dosan eventually converted to Christianity over a period of four years.