From 2009 with relevancy today:
Russia and China are now better prepared to fight together than Britain and America were before World War ii.
Although the two don’t always see eye to eye, Russia and China today have a strong military alliance, largely to counter mutual foes. The two nations have already signed a de facto defense pact.
Russia and China held their first set of war games in 2005. These were labeled “anti-terrorist” exercises, but in reality they were far more—involving over 10,000 troops, warships and airplanes. They simulated landing attacks against hostile shores and even featured large-scale paratroop drops. Experts believe they may have been a trial run for a joint Russia-China invasion of Taiwan, or for supporting a Central Asian government against an American-backed insurgency.