Can this thing pack antiship missiles?
No large air search and fire control radars, so U-VLS is definitely not for HHQ-9s. So it definitely is for YJ-18 or if they have managed to VLS the YJ-83. Previous Zhuhai defense shows have model and poster graphics of YJ-83 fitted in U-VLS. Note that I'm not sure if this U-VLS is the 7 or 9 meter one. The YJ-18 can only fit on the 9 meter tube, but the VLS YJ-83 can fit in both 7 and 9 meter tubes.
Another possibility is a cheaper shorter all subsonic version of the YJ-18 that can replace the YJ-83. In this case, the missile is no longer two stages, but a single cruise missile stage with no separation and second rocket stage. The missile can be made shorter and cheaper, and you can produce a land attack version of it, similar to the Kalibers.
It's also possible, following the footsteps of the Klub-Kaliber missile family, you can produce an ASW missile out of this, by adapting a torpedo as the second stage attached to the cruise missile stage. If this is the case, an ASW YJ-18 variant can replace the YU-8 that uses the AJK-16 VLS.
A smaller rotating AESA radar can provide targeting and mid range guidance for smaller SAMs which suggest to me this vessel may use shorter ranged ESSM class quad pack SAMs. I think this is the only logical air defense this corvette can have, similar to the way some Russian corvettes use the Vityaz for air defense albeit with a dedicated VLS for this missile. No way this vessel will use HHQ-9s with that small a radar, but a small radar can serve the uses of a Vityaz (9M96).
Finally, I think this vessel was created as a last minute notice. Diesel powered 054A and 056A lack the speed with their 25+ something knots to chase down US nuclear powered subs and LCS vessels. Yeah the LCS is a failure but those times the Independence class LCS were running down the South China seas, it appears the PLAN was very impressed with it as the diesel powered 054A and 056 can't keep up with them, allowing the LCS vessels to violate China claimed waters with impunity. (This may also have been the reason to bring back the 022 out of the mothballs and retired the 056 to the coast guard). I give it a high chance it may have gas turbines, and I like the chance to see if it has water jets on the back.