They seem self sufficient in terms of UAV/UUV production at least and have been able to continue to repair and keep their limited air force in operation, cottage industry is still industry when the entire country is under Russian fire control.
If China was really that invested in a Russian victory, it would've put a lot more effort into stopping UAV component imports into Ukraine.
For now at least. But every few days or so, a repair shop or a make shift drone manufacturing center gets an Iskander or FAB or Geran or cruise missile on it.
It's not hard to spot one. First look for something like a hanger or warehouse. Observe the type of vehicles going into it, or parked in or near it. Look for buildings, for example, abandoned malls or shopping centers. Or schools. The kind of people, vehicles, and communication, going in and out of it. A civilian structure turned military use will have military trucks and people in camouflage, it's either turned into an ammo depot, vehicle hanger, barracks, headquarters, and production center for something. It's all happening because Ukraine can no longer stop the Russian drones from doing hyper reconnaissance. These are things I learned from videos of how the Russians do it.
The local people that will betray these locations are always there. There's the pro-Russian. There's the people that just hates Zelensky and the neo nazis. And then there's just the corrupt, who are willing to sell out to make a buck.
Knocking out electricity will affect these production centers. So what will the Ukrainians do? Use portable generators. But these will reveal themselves through their heat signatures. Then there's the trail of fuel trucks.
Sooner or later, you're just going to run out of structures.
The Lyiv shopping center burning again.
Kharkhiv TV tower has collapsed, thanks to a X-59 strike.
Russians advance into the center of Ocheretino.
Courier robot terminator already in use by the 74th Brigade.
Ukrainian stronghold captured and suppressed by the 11th VDV Brigade, taking a few prisoners. This in Chasiv Yar.