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Then he told Yan Lao Er, "I'll calculate half the amount for you first. When you return from the quarry, tell me the exact number.",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.,Chapter 165 Buy Bricks and Stones for Free Reading: , !。