In the next Council of the Four Kingdoms, after the Sinican Council was disbanded with the Treaty of Putian, the states of Chu, Wei, Han, and Xi formed the United Kingdom, 聯合国 in 77 BC. The Constitution of the United Kingdom provided that the Dukes of each of the duchies making up these individual kingdoms shall choose an Archduke, who shall function only in that Kingdom of the dukes. The King of the United Kingdom shall rotate from the Archduke of one country to the next archduke of the next kingdom and this would repeat for every four Kings.