What was the process of forging weapons in ancient times?

From the Warring States to the Eastern Han Dynasty, the main achievements in ironmaking, steelmaking and processing technology are as follows: ① The varieties and technologies of ironmaking include lump ironmaking obtained by low-temperature solid reduction; White pig iron, pitted pig iron, gray pig iron and ductile iron obtained by high temperature liquid reduction method; White pig iron is processed into malleable cast iron (nodular cast iron) and nodular malleable cast iron by annealing softening treatment technology. The solid decarbonization technology was used to decarbonize malleable cast iron. Fried steel and wrought iron are made of pig iron by frying; One hundred kinds of steelmaking techniques were applied to stir-frying steel, resulting in one hundred kinds of steelmaking techniques. (3) According to different uses of iron or different parts of iron, various processing technologies are adopted, such as quenching blades. Almost all the technologies mentioned above can be found in the production of various weapons, which shows that there has been a tradition of making war weapons with the most advanced technology since ancient times.