The main task of this paper is to deal with the Buddhist tradition and acceptance of Yongmunsan Mountain in Yangpyeong. Yongmunsan Mountain was originally called Mijisan Mountain in ancient times, and it seems to have something to do with Buddhism, whether it is Yongmunsan Mountain or Mijisan Mountain. Locally called Mijisan Mountain or Yongmunsan Mountain, it has gradually been called Yongmunsan Mountain since the Joseon Dynasty, and seems to have arrived today.
Although there is no clear record of when Buddhism was introduced to Yongmunsan Mountain, Borisa Dongjong, known as the Jogyesa Temple or Sangwonsa Temple, was made in the mid-8th century when it could be considered reliable. According to Yongmun Sagi, which was built in 1458(the 7th year of King Sejo's reign), since Yongmunsa Temple was built during the Silla Dynasty, Buddhism was generally introduced in the early days of the Unified Silla Dynasty.
The actual records of Buddhism on Yongmunsan Mountain are reliable, as the late 10th century Buddhist monk Yeoum, the archbishop of Daegyeong, mentioned in Borisa temple, which was heavily occupied by Wang Geon, that is, Taejo built or promoted Sanasa temple, a Buddhist temple of this order. It would have been further enhanced by the backing of Hamgyu, who called himself King Ham of Yanggeun's family, which was related to the performance of the foundation of Sanasa temple.