Those mortal enemies are having joint military exercises as we speak.
China, Russia to hold joint military drills July 01, 2013
Keyword phrase -
“China, together with Russia, is willing to enhance high-level mutual visits, professional and personnel exchanges...”
Translation: Chicomm and Russian ships will visit the ports of each country, and the sailors enjoy shore leave.
That’s not military exercises. I think you’re overreacting by miles.