What's the yield rate on marble? A follower asked this yesterday. That question isn't professional. Marble yield rate isn't a fixed number. How's it calculated? Let me show you on the computer. Come on. Let's look at the computer. First, this area. This is a floor area. It has—one, two, three, four—8 zones. These 8 zones, now we import the stone slabs. OK, here. These are the slab scans. We import them all at once. OK, they're imported now. In a moment we'll see the yield rate. Now it's reading each slab. Hit confirm. Every slab is scanned in. For each slab, let's see how it's divided. Now let's divide it. Look at the plan. Now it's divided into pieces like this, one piece at a time. Here you can try plans. Take Q1. Let me switch plans. Say this one, pieces get smaller. Smaller pieces affect yield. Let's go straight to the rendering. Click here. This rendering comes from that slab layout. Same Q1—we can switch back to this plan. So what about this plan? Here, let's click and see this slab. With this plan, one slab cuts exactly two pieces. So what's the yield rate? Basically this side gets wasted. After that waste, yield is around 80 percent. What if we switch plans? This one won't cut—it's linked to others. Let's look at this plan. Here, cut to this size, yield goes up. See, because there's less waste. See, slight waste on two sides. This plan's yield hits 90 percent. If we cut this plan—see, smaller pieces here—the yield actually drops. See, this side is wasted. So this slab, cut for this area, this plan's yield is highest. But the shape is a long strip. Here we weigh two things: first, the visual effect; second, the yield rate. So if you want maximum yield, pick this plan. Want the biggest pieces? This is it, and the yield is still 80%. That's a 10% yield difference, but the sizes are different. Same here—this and this can both be adjusted. So what affects yield? It depends on the whole area's layout and your planning, how you divide sizes, how slabs cut. We cut two. This Q6 can also switch to this plan. Switch, and this slab cuts three. And some areas—like two pieces here—the other piece goes to another area. See this piece—cut with this one. Where's this piece? Over here. So the yield—see, this side combines with that side. So you must consider it across the whole plan, not just the yield of one slab. There's per-slab yield, and there's overall yield. So it's combined, and it's not a fixed number. It depends on your planning, and your taste. Big, small, long, wide—that's also personal taste, and the overall design style. OK, those factors affect yield. That's all for this video.