近代中国衰微,致遭列强侵凌,尤以东邻日本为最。早在19世纪中期,日本学者佐藤信渊、岛津齐彬与吉田松阴等就先后提出各种侵华方案。佐藤信渊认为“统一万国之法,首在攻取中国之满洲,次第经略渤海、华中、华南,数年间底定全中国。”岛津齐彬则主张“日本应早日取得福州和台湾及朝鲜,以强化日本国防”。吉田松阴则力倡“北割满洲之地,南收台湾、吕宋诸岛,渐示进取之势”。 The decline of modern China caused by the powers to invade, especially east of Japan as the most. As early as the mid-19th century, Japanese scholars Sato Nobunaga, Shimadzu Qibin and Yoshida Shoin were successively putting forward various programs of invading China. Sato Nobuo believes that “the law of a unified country, the first capture of Manchuria in China, the second slightly after the Bohai Sea, Central China, South China, a few years after the end of the whole of China.” “Shimadzu Qibin argues that” Japan should obtain early Fuzhou and Taiwan and North Korea to strengthen Japan’s national defense. “ Yoshida Songyin then advocated ”North Manchuria, South Taiwan, Luzon Islands, gradual progress".