The fortress played a role to protect the capital Pyongyang during Goguryeo's control in the west side.
According to Samguksagi, the fortress was enlarged several times from the early 5th century, which was followed by additional construction of stronghold during Gwanggaeto the Great.
Later Jangsu of Goguryeo officially transferred the capital to Pyeongyang, while series of fortresses were constructed later this time.
Since the site is quite critical for the defense of northern area of Korean peninsula, the importance was not overlooked by the later kings.
In 1675, Sukjong of Joseon reestablished northern part of this fortress to strengthen the national defense.