If the IOC finally is willing to admit to doubt about the ages of Chinese gymnasts, asking the Chinese government or gymnastics federation is unlikely to resolve the issue in anyone’s mind. You don’t ask a liar if they are lying and expect them to say, “Oh, yeah, you caught me. I was lying.” DOH!
The only thing that might help, and even that is unlikely to bring resolution, is a hearing before The Court of Arbitration for Sport, with the doubters bringing forward the documentation and video that they offer as proof of the gymnasts’ true age. Won’t happen.