Why didn’t Iran get fighter jets from China before the war?

« Israel’s » and Amerikkka’s main way of attacking Iran is via air. So why didn’t Iran try to strengthen it’s own airforce by acquiring Chinese fighter jets that have proven to be effective against Western made fighter jets? The axis of Epstein would have had a much harder time striking Iran.

Iran’s airforce mostly consists of older equipment you would think the addition of dozens of Chinese fighter jets could have benefitted them greatly.