EU import taxes designed to make them less cheap than local cars do that.
China has one of the least free trade regimes in the world, their currency controls alone amount to potentially more than Euro tariffs on cars and that’s just one part of their governmental stacking of the deck for their manufacturers.
I think it’s easy to look at the outputs of their industries and compare them extremely favorably to the outputs elsewhere, especially in EV.
But once you start comparing tariff adjusted pricing it gets much trickier much faster.