Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Capital Cities and Tombs of the Ancient Koguryo Kingdom' has mentioned 'Pyongyang' in the following places:
Occurrence Sentence Text Source
Gungnae City, within the modern city of Ji'an, played the role of a supporting capital after the main Goguryeo capital moved to Pyongyang.
Guonei City played the role of a supporting capital after the main Koguryo capital moved to Pyongyang; it is one of the few plains city sites with stone city walls still standing.