A graduate of the Department of History Education at Seoul National University, Jung Heon-gyeong has worked as a middle school history teacher and an editor at a publishing house. Jung began writing to teach history from the basics, aiming to convey accurate knowledge with a broad perspective on world history. Jung’s published works include One Story a Day for Elementary World History, Vols. 1 & 2, Korean History Through 70 Key Terms from Textbooks, World History Through 70 Key Terms from Textbooks, Thieves Who Changed World History, and Lightning Guide to World History.