Actually the Apollo missions did deploy a few UV telescopes on the lunar surface. They weren't much better than Earth-orbit telescopes, and so noone has bothered since. The radar is more interesting, but probably of limited utility given the power requirements to actually penetrate deep enough to see the layered mare deposits.
Where China is decades behind the US, Europe, and Japan is that they don't really release their science products. US missions legally must release all raw and processed data after a short proprietary period (typically a year). Europe and Japan take longer, but still do usually release all their raw data. China does not, and often waits until after the mission is over before releasing even highly processed versions of the data. The lack of raw data (and opacity of how it is processed) means that it is hard to compare to other sources, and belies any claim to actual scientific motivation.