Dual monarchy, referred to as dual monarchy, is the product of compromise between the bourgeoisie and feudal rulers. Its main features are: the hereditary monarch is the head of state and has real power, the cabinet members are appointed by the monarch, the government is responsible to the monarch, and the parliament exercises legislative power but the monarch has veto power. Under this regime, although the country has also formulated a constitution and established a parliament, the monarch still maintains the authority of the feudal autocratic era, integrating legislation, administration, justice and military affairs, and is the power center and the highest actual ruler. Constitutions are usually formulated by royal decrees, reflecting the will of the monarch; Parliament is the advisory body of the monarch, and the legislative power is formal. The monarch not only has the right to veto parliamentary legislation, but also controls parliament by appointing or designating members. The Cabinet is the institution where the monarch exercises executive power, and the Prime Minister is appointed by the monarch. The dual monarchy came into being in a country where capitalism developed late and the feudal landlord class had great power for a long time. It is a ruling form of the joint dictatorship of the bourgeoisie and the landlord class, which is more feudal and autocratic than the parliamentary monarchy. Constitutional monarchy, also known as "limited monarchy", is a form of political organization in capitalist countries whose sovereign power is restricted by the constitution, and it is the product of compromise between the bourgeoisie and feudal forces. There are two kinds: binary system and parliamentary system. Dual constitutional monarchy is the separation of powers between the monarch and parliament, and the monarch appoints the cabinet, which is responsible to the monarch. The monarch directly controls the executive power, and the parliament exercises the legislative power, but the monarch has the veto power.