Three Departments and Six Ministries

The Three Departments and Six Ministries (Chinese: 三省六部; pinyin: Sān Shěng Liù Bù) system was the primary administrative structure in imperial China from the Sui dynasty (581–618) to the Yuan dynasty (1271–1368). It was also used by Balhae (698–926) and Goryeo (918–1392) and various other kingdoms in Manchuria, Korea and Vietnam.

Source: Wikipedia — Three Departments and Six Ministries (CC BY-SA 4.0)