Xiulote repeatedly examined the circle, but he could not find any flaws on the golden mask. Thus, he nodded slightly and returned the mask to the elder goldsmith, who clearly sighed in relief.
The young man chuckled softly, followed immediately by a surge of joy. The lost wax process could be used to create fine gold articles, as well as cast exquisite bronze and iron artifacts, including all finely machined components. More importantly, this clay mold casting method could be used to manufacture the trigger mechanisms for matchlock guns, the copper cannon of this era, and even future iron cannons!