Complex sentence: Gakhwangjeon Hall stands on the same granite base once used by Jangnyukjeon Hall, constructed in the post and lintel style that was emblematic of late Unified Silla architecture.
Split into simpler sentences: Gakhwangjeon Hall stands on the same granite base once used by Jangnyukjeon Hall. It was constructed in the post and lintel style that was emblematic of late Unified Silla architecture.