Speaking of this, first of all, let's talk about the origin of "ending". Ending refers to the curtain falling, that is, the curtain falling movement, which is an extremely important historical event in modern Japanese history. Before the Meiji Restoration, in Japan, the reformist centers with the middle and lower samurai as the main body were in the economically developed four clans of Samo, Changzhou, Tosa and Feiqian in the southwest. They gradually realized the crisis of their backward ethnic groups and put forward the slogan of "respecting the king and rejecting foreign countries", the essence of which was to overthrow the Tokugawa era.

Four San Francisco refers to Samo San Francisco, Fei Qian San Francisco, Tosa San Francisco and Changzhou San Francisco.

The curtain movement promoted the Meiji Restoration in Japan and made Japan transition from a feudal society to a capitalist society. It was this movement that led to the Meiji Restoration in Japan.