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Jeong Cheol (정철, 1536–1593) was a Korean statesman and poet. He used the pen-names Gyeham (계함) and Songgang(송강), and studied under Kim Yunjae at Hwanbyeokdang. He was expelled by the Easterners.
He is prominent in the gasa and the sijo, which are forms of classical Korean poetry.
- Gwandong Byeolgok (the Song of the Sceneries of the Gwandong).
- Samiingok (Mindful of My Seemly Lord).
- Songgang Gasa (Songgang's Prose Poetry Book).