This book approaches Korean citizen’s consciousness and changing patterns of behavior from middle ages to the modern era by studying Koryo, early and middle Choson dynastythrough incidents like Secret Royal Inspector impersonation, and natural disasters. More contents like "Waeon,’ "Yoeon," "Ickmyengseo," in the Koryo dynasty periods, including political and social aspectsof the Choson period, political criticism, earthquake occurrence and the government’s countermeasures are included.