This book contains various aids for students of written Korean, particularly the Sino-Korean characters known as Hancha or Hanmun. This specialized vocabulary includes the origin, etymology, historical classifications and signification of each word. It introduces systematically the radical elements and their compounds, together with related or associated characters. Each character is accompanied by a chart demonstrating the proper way to write it and the evolution of pictographs. It presents first the 1,800 essential characters prescribed by the Ministry of Education as the minimum requirement for the middle school through high schools in the nation throughout Korea. It also lists 800 more general usages, the total number of its characters amounting to 2,600 characters; 500 Biblical terms and phrases, 1,600 high frequency compounds, and 1,200 phrases for typical conversational usage.