According to an article in Voice of America on October 08, 2011, China is continuing to purchase large numbers of Russian fighter engines. So far this year, China and Russia have signed two fighter engine sales contracts and recently have been negotiating to sign a 3rd one. Up until now, China has bought 1,000 fighter engines. Analysts say that China is still heavily dependent on Russia for fighter engines because China’s domestic made engines have a shorter life span and less power.
Source: Voice of America, October 08, 2011