Kammala jumla mai zuwa: CER aikin haɗin gwiwa ne na China da Rasha, kuma bayan Yaƙin Russo-Japan, Jafananci sun karɓi yankin kudancin CER, suna samar da Railway na Kudancin Manchuria, tare da sassan arewacin da ke ƙarƙashin ikon Sin da 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 kai ga
Rikicin Sino-Soviet na 1929, wanda Soviets suka yi saurin kayar da sojojin kasar Sin kuma suka tilasta wa Sinawa sake karɓar ikon haɗin gwiwar layin dogo. 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.