Chinese Eastern Railway Liaodong from China in 1898. Officially, traffic on the line started in November 1901, but regular passenger traffic from St. Petersburg to Vladivostok across the Trans-Siberian railway did not commence until July 1903. In 1898, construction of a 550-mile (880 km) spur line, most of which later formed the South Manchuria Railway, began at Harbin, leading southwards through Eastern Manchuria, along the Liaodong Peninsula, to the ice-free deep-water port at Lüshun, which Russia was fortifying and developing into a first-class strategic naval base and marine coaling station for its Far East Fleet and Merchant Marine. This town was known in
Chinese Eastern Railway in Harbin. The railway and the concession, known as the Chinese Eastern Railway Zone, were administered from the city, which grew into a major rail hub. The southern branch of the CER, which became the South Manchuria Railway in 1906, became the locus and partial casus belli for the Russo-Japanese War, the 1929 Sino-Soviet Conflict, and the Second Sino-Japanese War. The Soviet Union returned the Chinese Eastern Railway to the People's Republic of China in 1952. The Chinese Eastern Railway, a single-track line, provided a shortcut for the world's longest railroad, the Trans-Siberian Railway, from near the Siberian city of