This is a surprisingly in depth and reflective article about PLA TACP/CCT/JTAC stuff.
Looks like they are are continuing to rollout and refine TACP development and efforts, and getting people from different services together to exchange ideas, including PLAAF, but also PLAN.
It also talks about liaising with industry to develop better equipment, and there's a mention about calling in naval fires as well.
Either way seems like they're taking this whole joint thing pretty seriously and pushing it down to lower echelons.
Worth a read (any machine translator will do a decent job of it).
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I do wonder what the exact track and division of roles the PLA equivalent of TACP/JTAC/FAC/CCT is.
In the US, those roles are split between different services but TACPs and CCTs are a USAF track, while JTAC is more of a general qualification AIUI
From the article, it seems the PLA has "joint tactical controllers/guides" across all three services (PLAGF, PLAAF, PLAN), which somewhat makes sense, but I'm less sure about the training pipeline. AIUI, TACPs and CCTs are considered special warfare capable.