Daejangjeon Hall and Y unjangdae (a rotating sutra case cabinet) were built by a monk named Joeung to pray for the peace of the country during the national crisis caused by GIM Bodang’s rebellion in 1173 (the 3rd year of the reign of King Myeongjong of Goryeo). The journal (1185) about the repair of Yongmunsa Temple mentions the person who offered the prayer, the construction date, and the purpose of its construction, which is not usually found. In general, the Daejangjeon Hall of each Buddhist temple was used to store the Buddhist Scriptures, but this one at Yongmunsa was built to keep the Yunjangdae. The rotating sutra case cabinet is the only one in the country, while no similar device was found even in neighboring country.