China steam in Japan

QJ and RM class in China Railway exposition Aug. 1982
The Chinese railway exposition was held in Yokohama in 1982. At this time, three locomotives were exhibited. Qj class and RM class were possible to run. However, it was a section of about 100 meters. As for two locomotives, does not return to China. And now preserved in Aioi City Hyogo Pref. Japan.