In September of 1872, Yoshimoto HANABUSA came to Korea by the ship named Kasugamaru to interchange with the Tsushima clan, so Korea considered Japan a target under Eisei Sekija (Korea's foreign policy during this period to respect the justice and exclude the evil; in this case Japan was regarded as evil) as well as Western Europe.
1872年9月対馬藩と交替するために来朝した花房義質が、春日丸に乗ってきたことから、日本を西欧勢同様、衛正斥邪の対象として、前述のように食糧の供給を停止した。