Nijang, or plastering, is the act of applying soil, lime, cement, and other materials on walls, ceilings, and floors. Since Korean plastering techniques were mostly passed down from artisan to apprentice orally, most have been lost in history. Yeonggeon uigwe (Royal Protocols for Palace Construction) are old documents detailing the rituals and procedures related to the construction of royal buildings. This research book provides a selected compilation of plastering-related content from Yeonggeon uigwe that is translated into modern Korean, particularly records on wall plastering and the author’s commentary on the topic. The book thereby contributes to the restoration of old plastering techniques and studies on Joseon’s construction technology.