When did the Japanese army enter the Northeast?

/kloc-before 0/904, the northeast was mainly occupied by Russia, and even the leased land was called "Kanto Province". 1904, Japan launched the Russo-Japanese War, and finally Japan and Russia signed the Portsmouth Treaty, which stipulated that Russia would "transfer" all the privileges such as the railway leased from China, Dalian Bay and Changchun to Lushunkou to Japan. At the end of 1905, Japan forced the Qing government to sign the Formal Agreement and Supplementary Agreement of the China-Japan Conference on the Three Eastern Provinces, and obtained all the rights south of Changchun, including the right to station troops to protect roads, and demarcated the Japanese concessions of Yingkou, Anton and Fengtian.