Personally, I think PLAN should consider extend the service of #112 and #113 a few years beyond 30 years (2024-2025), mainly because of:-
1) to keep a larger pool of experienced sailors for future transfer to new destroyers build after 2025.
2) to maintain the numbers of surface combat ships during this time of geopolitical tensions with AUKUS, India and Japan.
I also hope that after retiring from active service, they can turn #112 and #113 into training ships, replacing the older ones consist of the obsolete type 053 FFG (#517 and #519).