As to their space program, they are advancing very rapidly and that will definitely yeild them a lot of dividends.
Regarding military Amphib capability, they have two hundred anf fifty of these:
Thirty of these:
and about twnety five of these.
...and these. And more building (not including what they would certainly appropriate from their commercial fleets).
We're down to 39 Amphibious ships. They were 200 plus in the 50's and 100 plus in the 60's. Actually our entire Naval Force of total fleet avaible is at an all time low in modern history but you will never convince soome that this is not by any means good. If our fleets are destroyed we no longer have the capabilities on a massive scale to rebuild. We would have to rebuild the facilities and tooling first. China doesn't need advanced technology to be a major problem for us. They have more than enough people to make up for that.