Seongjong’s Confucian Government
Adopting Choe Seung-ro’s memorial, King Seongjong built the two-chancellery, six-ministry system, set up twelve provincial governorships and founded the National University.

Nicor · CC BY-SA 3.0 · Source
Adapting Tang’s three chancelleries, Goryeo set up the Secretariat-Chancellery and the Department of State Affairs over six ministries (personnel, military, revenue, justice, rites, works). From Song it borrowed the Security Council and the Finance Commission, while the Dobyeongmasa and Sigmok Dogam, where top ministers decided major matters together, were Goryeo’s own. Censorate officials checked the king and officials by reviewing appointments and remonstrating.
In 983 twelve governorships (mok) received the first centrally appointed local governors, and regional lords were turned into hereditary local clerks (hyangni). The National University (Gukjagam) opened in 992 and scholars were sent to the twelve mok. Relief granaries (uichang) and price-stabilizing granaries (sangpyeongchang) were established, and in 996 Goryeo cast its first iron coin, Geonwon jungbo. The Lantern and Palgwan festivals were curtailed.