Workers constructing the Seoul-Busan railroad line in 1905 were required to dismantle a large pagoda located too close to the trackbed. Inside, they discovered a brass receptacle containing this document. Written in ink on paper, it records the process of how the pagoda was constructed during the Goryeo Dynasty from the 10th to the 22nd year (1019-1031) of the reign of King Hyeonjong. A group of low-ranking local officials assisted by local residents built this five-story pagoda at Jeongdosa Temple in Sangju-mok, North Gyeongsang-do Province. With 54 lines and more than 2,000 letters of text, the report on the pagoda is longer than most surviving Goryeo Dynasty documents. The fascinating description of how the low-ranking officials in charge of the construction built the pagoda over the course of more than a decade provides a valuable glimpse into the functioning and interaction of the local society and temples. Furthermore, the document is significant in the field of Korean linguistics since it demonstrates the use of idu, a writing system that employs simplified forms of Chinese characters to phonetically transcribe Korean. The document also includes a portion of another early Goryeo record features the system used for measuring land. This report is a crucial relic for the study of the social, economic, and Buddhist history of the Goryeo Dynasty.