Martial arts in the world is a political theory put forward by Noshin Oda, a famous Japanese figure during the Warring States Period. Literally speaking, the world is armed under the sky. The world is usually interpreted as "taking the world by force", but in recent years it has been interpreted as "ruling the world by the Wu regime" Nobunaga began to use the seal "Armed in the World" when he changed his name to Gifu. The name of Gifu is taken from the idea that Zhou Wenwang in ancient China would rule the world in the future based on Gifu, from which we can see the ambition of the faithful. In the future, Nobunaga, based in Gifu, opened the road of unifying Japan in 15 years.

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