Well there is a pattern in China that when it comes to important weapon systems they always tend to show the older generation of what they have so they could be hiding their actual strength and since the DF-41 is the latest ICBM China has they probably want to keep it away from public eyes for as long as possible.I was thinking that either you parade something that has to do with WWII, or you parade your newest toys to show off you national defense capabilities. That is what Russia does: only historical ones or newest ones, nothing in between. As with DF-5, that is something "in between," so unless we are talking about DF-5Bs, I don't get the logic of parading a first generation ICBM.