got its first railway station, located in Kuancheng, part of the railway from Harbin to Lüshun (the southern branch of the Chinese Eastern Railway), constructed by the Russian Empire. After Russia's loss of the southernmost section of this branch as a result of the Russo-Japanese War of 1904–1905, the Kuancheng station (Kuanchengtze, in contemporary spelling) became the last Russian station on this branch. The next station just a short distance to the south—the new "Japanese" Changchun station—became the first station of the South Manchuria Railway, which now owned all the tracks running farther south, to Lüshun, which they re-gauged to the standard gauge (after a short period of using the narrow Japanese gauge during the war). A special Russo-Japanese agreement of 1907 provided that Russian gauge tracks would continue from the "Russian" Kuancheng Station to the "Japanese" Changchun Station, and vice versa, tracks on the "gauge adapted by the South Manchuria Railway" (i.e. the standard gauge) would continue from Changchun Station to Kuancheng Station. An epidemic of pneumonic plague occurred in surrounding Manchuria from 1910 to 1911, known as the Manchurian plague. It was the worst-ever recorded outbreak of pneumonic plague which was spread through the Trans-Manchurian railway from the border trade port of Manzhouli. This turned out to be the beginning of the large pneumonic plague pandemic of Manchuria and Mongolia which ultimately claimed 60,000 victims. City planning and development from 1906 to 1931 The Treaty of Portsmouth formally ended the Russo-Japanese War of 1904–05 and saw the transfer and assignment to the Empire of Japan in 1906 the railway between Changchun and Port Arthur, and all its branches. Having realized the strategic importance of Changchun's location with respect to Japan, China and Russia, the Japanese Government sent a group of planners and engineers to Changchun to determine the best site for a new railway station. Without the consent of the Chinese Government, Japan purchased or seized from local farmers the land on which the Changchun Railway Station was to be constructed as the centre of the South Manchuria Railway Affiliated Areas (SMRAA). In order to turn Changchun into the centre for extracting the agricultural and mineral resources of Manchuria, Japan developed a blueprint for Changchun and invested heavily in the construction of the city. At the beginning of 1907, as the prelude to, and preparation for, the invasion and occupation of China, Japan initiated the planning programme of