Clara Gu knew that he acted cautiously and was extremely thoughtful.
He said it was not the right time yet, so we just had to wait a little longer.
However, she pursed her lips, stood up, took his hand and led him into the study.
Not only had she come up with the recipe for glass, she had also figured out a rough method for making cement.
If cement could be produced, even without the machines of later generations, the roadbed could not be flattened and compacted. However, there were no overweight trucks in this time and space, and the load capacity of ordinary horse-drawn carriages was limited, so the damage to the road surface was also extremely limited.
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