I followed the mission mentioned in #s 8 & 20 fairly keenly though, curious as to what it may have been about. I was struck at launch by its exceptionally wide roll maneuver, which sure seemed to aim it further north. There was a lot of speculation by the media that it was to release a classified payload. And maybe it did. But that landing too, seemed quite unusual. I yet wonder that there wasn't something pretty heavy in there.
Conversely though, I don't think there's been such a highly classified mission since. But having and continuing that kind of access to orbit has yet got to be militarily important. I don't think capitalism has permeated the Chinese psyche quite so deeply yet to consider it primary to their applications.