[5] On 4 September 1909, he signed the Japan–China Agreement concerning Kando as the Japanese ambassador to the Qing dynasty in Beijing.
[6] During the Chinese Revolution broke out in October 1911, together with then Foreign Minister Uchida Yasuya, he argued for the provision of support to the Qing government.
[8] Prime Minister Hara Takashi wanted Ijūin to search for European institutions of public information when the latter was ambassador and a Versailles delegate.
[9] Eventually, a public information office, Gaimu-shō Jōhō-bu, in the ministry of foreign affairs was established on 13 August 1921, and Ijūin was appointed its head.
[15] Ijūin was replaced by Keishirō Matsui on 7 January 1924 when a new cabinet was formed by Kiyoura Keigo.