This Vessel still gives off huge test vehicle vibes, from the fact that it is an exhibition piece by CSSC and not the navy to the fact that it is being exhibited this way before being in service with the PLAN.
USN considers a notional Large USV to be around the ballpark of 1~2000 tons. The JARI-USV is only about 500 tons, roughly similar to the USV Vanguard launched earlier this year. What it does show, on the other hand, is that the PLAN is at least very interested in large USVs.