There's also a bigger picture with Tank Man, that shows the mostly empty square the tanks were leaving, with a handful of soldiers and bikes.
And a bunch of other photos showing the battle that took place in the surrounding streets, with cops that had been lynched and burned and protesters gunned down.
The evidence disproves the western narrative of tanks machine-gunning protesters inside the square, then liquefying bodies, that were then burnt and washed down the drain (and getting stopped by Tank Man on the way out).
That's not to say the Chinese claims should be taken at face value, but nothing I've seen contradicts their claim of 300 dead and several thousand wounded.