Inscription on the Wall of Pyeongyang Fortress

<treasure no. 642> This piece of stone wall from Pyeongyang Fortress is inscribed with the details of its construction, including a comprehensive schedule, the specific tasks performed, the number of hours worked each day, the responsibilities of each worker, and a list of the site supervisors and their areas of supervision. The powerful, vibrant inscriptions are typical of Goguryeo calligraphy, while the record of the titles of Goguryeo officials is of rare historical value.