The Supreme Soviet was the first socialist legislature and the Soviet legislative system has been introduced in all communist states. The Supreme Soviet convened twice a year, usually for two or three days each, making it one of the world's first frequently convened legislatures during its existence. The same meeting frequency was the norm in the Eastern Bloc countries as well as modern-day China. China's legislature, the National People's Congress (NPC) is modeled on the Soviet one. As with the Soviet one, the NPC is the highest organ of the state and elects a Standing Committee (the Soviets had a Presidium), the government and the State Council (the Soviet counterpart being the Council of Ministers). In addition, all communist states the ruling party has either had a clear majority such as China, or held every seats as they did in the Soviet Union in their national legislature.