Rubuta ci gaba don wannan sakin layi - CER wani aikin haɗin gwiwa ne na China da Rasha, kuma bayan Yaƙin Rasha da Japan, Jafananci sun karɓi yankin kudancin CER, suna samar da Railway na Kudancin Manchuria, tare da sassan arewacin da ke ƙarƙashin ikon Sino-Rasha. Bayan Juyin Juya Halin Oktoba, fararen Rasha sun sarrafa layin dogo na wani lokaci a lokacin yakin basasa na Rasha, amma daga 1917 gwamnatin Jamhuriyar Sin ta fara karɓar iko da layin dogo da kanta, har zuwa 1922 lokacin da aka sanya CER a hukumance a Sin-Soviet hadin gwiwa. Koyaya, a cikin 1929 Sinawa sun karɓi cikakken iko na CER, sun mamaye ofishin jakadancin Soviet a Harbin kuma sun kama jami'an CER. Wannan ya haifar da rikicin Sino-Soviet na 1929
, wanda Soviets da sauri suka kayar da sojojin kasar Sin kuma suka tilasta wa Sinawa su sake amincewa da haɗin gwiwar jirgin kasa. Bayan Rikicin Mukden, Soviets sun ci gaba da kula da layin dogo duk da mamayar Japan a arewa maso gabashin China; bayan kafa Manchukuo a 1932, CER ya zama hadin gwiwar Soviet-Manchukuo da ake kira "North Manchuria Railway". A watan Maris na 1935, gwamnatin Manchukuo ta sayi rabon Soviet na NMR na yen miliyan 140, kuma Manchukuo National Railway ya karɓi dukkan hanyar.