Here's another residential zone that you can develop. You'll need nails for this one:

Short on nails? You can make nails out of steel at a building supply shop (you may wait five minutes for them to be made, or you may pay virtual dollars to hurry that up).12

You need steel to make nails. How do you get steel? You make it at a factory. You must wait one minute per steel girder (or you may pay to hurry that up). With a big enough factory you can at least fill three orders at a time:

While you're waiting, you could develop this plot of residential land, if only you had two more hammers...

看到了...方大意圖使人玩不下去!!!