Woosung Bae, editor, is Professor in the Department of Korean History at the University of Seoul, Seoul, South Korea, and Visiting Scholar at Korea Institute, Harvard University (January 2009 to January 2010). He is also the author of Chosŏn and Chunghwa: The World and Civilization That Chosŏn Dreamt and Imagined, Tolbegae, 2014. Sunghee Kim, translator, is Research Fellow at the National Institute of Korean History, Gwacheon, South Korea. Timothy Vincent Atkinson, translator, is Professor at Seoul University of Foreign Studies, Seoul, South Korea, who worked on the translation: A Korean Scholar’s Rude Awakening in Qing China: Pak Chega’s Discourse on Northern Learning (Honolulu: University of Hawai’i Press, 2019). Sook Pyo Suzanne Lee, translator, worked on the translation: The Land of Scholars: Two Thousand Years of Korean Confucianism (Paramus, NJ: Homa & Sekey Books, 2005). Kenneth R. Robinson, copy editor, is a former Senior Associate Professor at International Christian University, Tokyo, Japan (Division of Social Sciences). He has co-translated with JaHyun Kim Haboush A Korean War Captive in Japan, 1597–1600: The Writings of Kang Hang (New York: Columbia University Press, 2013).