[ There’s plenty of social cues that the Doctor misses out on, but sparks of curiosity in something is not one of them. There’s something like an odd mix of smug pride that settles in his voice as he gives his sonic a little toss in the air. ]

The sonic screwdriver mainly works with the various waves around us. Sound, radiation, electromagnetic, chemical — you get the idea. [ Which probably doesn’t answer Zhou Zishu’s question whatsoever. The Doctor can’t help but look a little bit puzzled at what he says next though. ]

It doesn’t normally work on wood but then again it wasn’t working on things it should have worked on so maybe something here changed the software settings.