The city of Zabaikalsk. Border with the People's Republic of China. Border sign with the inscription "USSR". Border outpost. The outfit of a soldier takes over the protection of the state border. Soviet customs officials and Chinese representatives inspect the wagons of the train that delivered goods from China to the Borzya railway station (Zabaikalsk), draw up documents. The former commandant of the Chinese city of Harbin, Marshal of Artillery KP Kazakov tells (synchronously) about the donation to the Chinese government of captured Japanese weapons captured by Soviet troops during the defeat of the Kwantung Army. Former military adviser in China, Lieutenant General A. Ya. Kalyagin talks (synchronously) about the arming of the Chinese army before World War II and the Soviet Union's assistance in its rearmament.