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... people's livelihood.
At this time, Yinggao was also in trouble. He knew in his heart that it would not be easy, or even very difficult, to accomplish this.
At least before the iron smelting technology breaks through, it is too risky to use cement mortar to build embankments.
Lost the cooperation of steel bars, cement and mortar alone cannot achieve the purpose of long-term solidity.
After all, Daqin cannot build and maintain roads all the time. This will t ...
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