Is the HJ-13E the same missile as the so-called "HJ-16" seen a while back?
Based on this video, yes.
What are the differences between "guided rockets" and "missiles powered by rocket motors"? If we be pedantic the latter doesn't necessitate a guidance. The terminology is super fuzzy and confusing on this matter. For example rocket artillery munitions are called missiles in some countries even...
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Any further information on this CS/UR5 drone swarm system? Looks like they've gleaned a few tactics out of the Ukraine playbook.
They've had similar concepts in the past, I think that system or an earlier iteration of it was at Zhuhai last time
And before that we've seen swarm UAV concepts/tech demos years ago already.
I doubt it has anything to do with Ukraine, such systems have been pursued for years before Ukraine happened, and I suspect both Russia and Ukraine would love to have a more integrated and bespoke system like this