In the second half of the 19th century, the Korean Peninsula was the scene of a power struggle between several imperial powers, including the
Russians and the
French, as well as the Chinese and the Japanese. The
Meiji Restoration of 1868 ended the 265-year-old feudalistic
Tokugawa shogunate in
Japan. The new government of
Japan sent a messenger holding a letter with the sovereign's message which informed of the founding of a new administration of
Japan to the government of Korea
Joseon dynasty on December 19, 1868. However, the Koreans refused to receive the letter because it contained the
Chinese characters 皇 ("royal, imperial") and
勅 ("imperial decree"). According to the political system of the day, only the
Chinese emperor was allowed to use those characters, as they signified the imperial authority of
China. Hence, their use by a Japanese sovereign was considered unacceptable to the Koreans by implying that he was an equal of the emperor of
China. The Chinese suggested to the Koreans to receive the sovereign letter from
Japan because
China knew the power of
Japan at that moment. Despite government-level negotiations held in 1875 at
Pusan, no substantial progress was made. Instead, tension grew as the Koreans continued to refuse to recognize Japan's claims of equality with China. ==Engagement at Ganghwa Island==