On March 25, 2013, China and Russia signed a major arms sales framework agreement. China has purchased 24 Sukhoi Su-35 fighter jets from Russia.
The Sukhoi Su-35 fighter has only been gradually received since 2016, and it has only been 7 years so far.
Recently, according to public information from the military frequency band of CCTV, our air force replaced the Sukhoi Su-35 fighter jet imported from Russia with the J-16 fighter jet developed by ourselves.
Of course, as a so-called "four and a half generations" fighter, the overall performance of the Su-35 is far from being retired.