 So, then, after sowing, using metallic sores, with discoloring the powder and water, you obtain the rough shape of your orchids. Then, in case of these ewers or other kind of vessels and so on, you want to hover it out. And for doing that, they use what we call a tubular drill. So, Hansford, for instance, for our Chinese workshops and so on, took photos of the 1930s of this kind of tool used. But today, of course, I can't show you that because we didn't replicate this kind of tool. But for my non-experiments, so from age, we replicated a kind of tubular drill. So, you see, this is hollowed out and so on. So, it worked with a bow, which is this kind of thing to put it in motion. And then you're also using the abrasive as well on the surface. Because all the tools, the little cutting discs here, or even the tubular drill here, did not actually do the work. This is the abrasive. It was only used to move the abrasives to create friction. And then to upfront. So, you're doing this with just a copper plumbing pipe then? Yeah. Perfect. Absolutely. And it worked very well, you know, for our Chinese workshop. Yeah. With a hobo reed, for instance. Okay. Yeah, we did some tests. Oh, wow. And it worked very well. Because this is always the abrasive which works. Yeah. This is not, you know. Right. And then, so you obtain this kind of cavity. Okay. Okay. So, this was made by this copper pipe. Okay. So, you remove what we call a bore core. Okay. Right. Which is the party, which is inside, you know, the drill, and you obtain that kind. And this kind of thing, remember that. Because when you are going to be in the V&A. That's the bottles, right? Sorry? That's what you get for the bottles? Or... Oh. Yeah, but what is interesting about this kind of thing, well, here it's in limestone. But when you got it in rock crystal, you have a lot of little cylindrical flasks. Made by the Fatihis and older Islamic production. And it's probably from that that they made them to the tubular flasks. Right. So, that's interesting. So, there is no waste of material. Exactly. Exactly. You know, very clever. Yeah. Yeah, that was something I was wondering about with the hollowing out, you know, if you're just making a rock crystal grit, or if you end up with something usable. Of course. Of course. Yeah, yeah, that's very clever. And we know that they used, you know, this tubular drill, because at the bottom of some of the vessels in the cavity again, you have rounded traces. Okay. Like, you know, it was, it is a negative. Yeah. Of the bottom. Right. So, oh yeah. You see what I mean. You see those there. Yeah. Yeah. When you zoom in on those. And you still have some abrasive, you know, stuck inside. Right. Very cool.