Red Chinese vice-minister fails to explain other age discrepancies

Red Chinese authorities are so busy scrambling to provide evidence that He Kexin was the right age for the Olympics that they overlooked to explain two others where there are also discrepancies. In The New York Times:

He was one of three Chinese women gymnasts whose age had been questioned in the lead-up to these Games. Cui [Dalin, the vice minister of the General Administration of Sport of China], however, did not address the reasons for the age discrepancies for the other two gymnasts: Jiang Yuyuan and Yang Yilin. Some national and provincial sports registries also have shown birth dates that would have made them too young to compete here. Yang won bronze in the all-around.

   I didn’t know much about the discrepancies for Jiang and Yang, and we have to ask this question: one administrative error, which the Red Chinese are blaming He Kexin’s 1994 birthdate on some records on, might be possible, but three? What are the odds of this, and what are the odds of two being Olympic medallists?
   Even if we took He’s passport at face value it’s hard to trust anything the Red Chinese authorities and state-controlled media tell us, given all these conflicting statements.