ja. i heard they have this "2nd field army comrades association of japanese" orgnization thing in japan. are those who had been fighting along chinese comrades side with the 2nd field army in the civil war. some went back to japan later. and when northeast 3 provinces were recaptured, there were lots of airfield, and some of the techs and pilots didn't make it to the train back to japan, or were just simply captured by PLA on the way, and PLA treated them well, so they say what the hell, they jsut stayed to teach the PLA foots soldiers to be pilots, who later on became the first generation pilots of the PLA, and the school was called "the old aero school of northeast" became the first part of PLA air force.