she started at earlier age, parents at that age can easily brainwash a kid, the kid will "enjoy" whatever they will tell him to enjoy, now after years of abuse, sorry, I mean training, she doesn't even most likely know there is any alternative to life like this

I can assure you Chinese parents can very easily force 6yo to do anything 2 hours a day (she spends most likely more hours a day than they claim), what is she gonna do, what's her other alternative at this age?