brief introduction:

Qing bricks cost one copper coin each, and red bricks cost one copper coin each.,If you don't mind going far, there are a few brick kilns near Changning. They're small family-run operations and the bricks take longer to make.,He was going to the quarry to see if they also used copper coins for transactions. If so, he would take his silver and exchange it for copper coins first, then use the copper coins to pay, making a profit on the difference.。

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