All those cheap, second rate weapon systems will never amount to anything.
An industry in which Chinese cloning has excelled to a disconcerting degree is the manufacture of weapon systems. China’s expanding military and growing assertiveness has been bolstered by weapons cloned from the arsenals of other countries. Bleeding edge U.S. aircraft including the Lockheed Martin F-35 Joint Strike Fighter and Northrop Grumman X-47B unmanned combat air vehicle (UCAV) have Chinese counterparts that are remarkably similar. Some of the technology used in these designs was almost certainly acquired through a vigorous Chinese cyber spying campaign.
http://news.usni.org/2015/10/27/chinas-military-built-with-cloned-weapons