Trajan
conscientia mille testes
I seriously doubt the Chinese sent troops to Vietnam. The two countries are hostile to each other..although they may have sent arms. Russians, however, are a different matter entirely.
there were over 40K Chinese troops ( and north koreans) in north Vietnam. they manned AA batteries, built roads, supervised building roads and bridges, drove trucks helped with logistics etc.
I happen to believe you are right, but please provide a credible link
naaah, don't think so.