Complex sentence: In 1945 at the end of the Second World War the city came under soviet Russian control, the "Chanchun Railway" was jointly operated by China and Russia until 1952 when control was passed entirely to the chinese government.
Split into simpler sentences: In 1945 at the end of the Second World War the city came under Soviet Russian control. The "Chanchun Railway" was jointly operated by China and Russia until 1952, when control was passed entirely to the Chinese government.