If they cheated in 2000, why not in 2008?

I blogged earlier that I thought China cheated by sending under-aged girls for the 2008 women gymnastic event. So far my doubts are not yet proven but it has now been proven that China cheated before by sending under aged girls in the 2000 Olympic gymnastics events. Now it is just a matter of time when the truth will surface. I still believe most of those girls in the 2008 gymnastics events are under 16 years of age. Once a cheat will always be a cheat.