Jeong Soyeong majored in Western painting at Duksung Women's University and the graduate school of the same university, and studied illustration at HILLS. She has authored Ring, Ring, Here's Your Letter, I'm the Town Doctor, Cock-a-doodle-doo, Open a New Day, and has illustrated I Am Just Who I Am, I Don't Do Well in School, and Let's Play in the Mountain, Let's Play in the Forest. She lives with her Indian husband who is a good cook of curry in Paju.