In short, the delegation of the Ministry of Foreign Affairs including Yoshioka entrusted a copy of the letter by the name of the Gaimu-taijo So with officials of the Joseon government in April 1872 and no further progress was made in diplomatic negotiations with Joseon.
結局のところ、吉岡ら外務省使節団による国交交渉は、1872年4月、朝鮮政府の役人に宗外務大丞名義の文書の写しを預けた以上には進展しなかった。