operating speed
The French train was a one time destructive test on a dedicated test track that destroyed both the train and track after one run, it was a stunt, and real TGV trains run at less than 300kph in regular operation.
This train is designed to test technology that allow regular, everyday operation at 500kph, compared to current 300kph trains running on Chinese HSR (and that's reduced from 350 kph pending signalling system fixes after the July crash). You can bet this train will travel much faster than than TGV during testing.