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Chapter 8 The prototype of the drainage channel
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Chapter 10 shortage of 3 rice
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... drainage channel looks very solid now, after a few heavy rains, the soil quality will be broken. If it is soaked, it will be softer, and it will collapse and block soon!
It's just that Lu Yan scanned around the trading house and found no powdered concrete for sale at all, not even the clay and adhesive used to make concrete.
"It seems that we have to use the [upgrade] function of the system."
Lu Yan called out the system interface, then looked towards the drain, and soon, tw ...
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