This is basically the arsenal ship people have speculated on. Only this way you can load up dozens of "stealth" arsenal ships on the cheap and spend a relative pittance to network it all with the PLAN. China's commercial shipbuilding yards can pump these out at a similar rate to USN warships being built. UVLS and missiles are cheap relative to a typical 055's sensors. Arsenal ships never made sense unless you can procure them quickly and cheaply like this.
IAD and anti ship ballistic missile launch pad. Better than that, potentially able to sail around undetected or at least be extremely resource demanding to track.
This is far beyond a mere arsenal ship. Just the VLS containers and a CEC datalink module is all you need for an arsenal ship.
This is essentially 80% of the combat capability of a full ledged warship with its own full sensor and self defence suites. There could even be a containerised CIC module in the there for all we know.
If they actually expand on this concept, it’s kinda hilarious to think of the kind of shenanigans they can get up to.
Imagine taking a bigger container ship, drop some drone control containers onboard and you have a drone mass carrier. Extend that a tiny bit more by taking some of the truly monstrous bulk carriers and dropping a full length angled runway on top with EMALs and you have yourself a de facto light carrier.
If you want to go the other way, imagine if they just covered one of these container ships with full length Type730/1130 and HQ10 modules. Pair a few of these shield ships with all warships and your warships are basically immune to enemy conventional missile attacks now.