In what must rank among the more audacious acts of industrial espionage and reverse engineering in modern aerospace history, China found itself in the extraordinary position of outselling Russia by offering cheaper copies of Russian fighter jets to third-country buyers — aircraft whose designs China had originally acquired through a combination of licensed production agreements, technology transfers, and what Western and Russian analysts politely described as "unauthorized replication."

The Shenyang J-11, China's domestic variant of the Su-27 Flanker, had been produced under a licensed agreement with Russia's Sukhoi. When China began producing versions beyond what the license permitted — and when those aircraft began appearing in Chinese export catalogs at prices that undercut the Russian originals — Moscow was furious but largely helpless.

The episode illustrated a broader pattern in China's industrial strategy during the 2000s: acquire foreign technology through legitimate means, absorb and adapt it domestically, then compete against the original supplier in third markets. Russian defense officials complained openly to Chinese counterparts and considered restricting future technology transfers — a concern that proved well-founded when similar patterns emerged in other sectors.

For developing countries shopping for affordable military aviation, the calculus was straightforward: Chinese hardware offered Russian-derived performance at Chinese prices, with the added benefit that Beijing came with fewer political conditions than Moscow.

Russia's response was to accelerate development of next-generation systems that China could not yet copy — a technology race within what was nominally a strategic partnership.