OK, hold on now, cus we have 2 people telling me different things.
@PiSigma is saying that the training is restricted to non-classified information and basic operating concepts, which is what my sense tells me.
@taxiya is telling me that they are trained in serious stuff that would be very damaging to the PLA if they were turned bad but was done in order to prepare them for fights against mutual enemies. And you both of you seem to be insiders (or family to an insider). So... could you two get some sort of consensus? And is the information that you're telling me known to be definitely true (presented to you as fact by your trusted primary source), or is it what you indirectly suppose from the information you have?