Many people here forget that China only got it's proper solid-fueled ICBM what could reach US with DF-31A and that was roughly 12 years ago, before that it was only small number of DF-5s, and maybe JL-2 but those are very new also. If you don't have anything better than cumbersome DF-5 series to reach US then minimal deterrence is all you got.
It looks like rocket force could be serious about DF-41 silo basing.
I hope China has been investing in resources to make the MAD more credible as Hu had suggested, and instead of just few hundred nuke heads capable of reaching the faraway intercontinental with the related delivery means, it should be few thousands. In time of war, there is no rationality! Adequate deterrence prevents mad man from taking reckless actions, for the sake of ALL CONCERNING PARTIES, not only China!!! For the sake of the globe indeed!