To be more precise, the instruments that the soot fell on were ESM equipment, with potential ECM. These are common with other higher end PLAN vessels, namely the Type 726-1 ESM and the Type 726-2 ESM (not sure if this is ESM or ECM). In addition to that there is quartet of small phase arrays under the 726-1 ESM that is new and I am not sure if this has anything to do with EW or is used for digital communication (CEC and all that). These equipment is all vital to the defense of the ship, as it enable use on the Type 726-3 ECM and 726-4 decoys at the hull.If they have scaffolding on all three, I suspect there is some smoke stack reshaping that is going happen. But that will affect the electronics behind it. Maybe raise the whole thing up by 3 meters and give it a cut angle.