Since the emergence of human civilization, the way to solve disputes is nothing more than war. Even in today's peacetime, there are cases where some countries fight because of disagreement. Of course, with the development of modern science and technology, our combat weapons are becoming more and more advanced, and mortars and intercontinental missiles have gradually become the protagonists of the battle. They have a wide range of lethality and strong lethality, and can kill people from thousands of miles away, so it is reasonable that they will soon become the darling of war. But in the era of cold weapons, these things have never been heard of, let alone used in war, which is simply a fantasy. Then they can only rely on that kind of close weapons, which leads to the so-called eighteen weapons. After the decline of the Eastern Zhou Dynasty, all the vassal states couldn't restrain their ambition of hegemony, eyeing the kingship, which led to wars among themselves, thus leaving a history of wars in the Spring and Autumn Period and the Warring States Period. Although there is no cutting-edge firepower in modern warfare, even in hand-to-hand combat, the last party has suffered heavy losses. At that time, the main weapon of war was the sword, and wuyue's bronze sword became a dazzling pearl, especially the sword of King Wu and the sword of King Yue. The sword of the King of Yue unearthed in Hubei has a total length of 56 cm, the surface of the sword is covered with patterns, the name of Gou Jian is engraved, and the sides of the sword lattice are inlaid with gems. It is quite well preserved and extremely sharp, and can easily cut copper and lead. There is little difference between the shape of the unearthed Wu Wang Jian and the shape of the Yue Wang Jian. It is also engraved with the name of Fuzha tea, decorated with animal patterns and inlaid with gems. These two swords are masterpieces of bronze swords in the Spring and Autumn Period and the Warring States Period, and are called national treasures by relevant people.

Then how was such a beautiful national sword forged in such a backward era at that time? First, the system. In our current words, it feels more like making a template: first, make a model of the sword out of clay and carve patterns in it. This is a crucial first step and the basis for the following steps. Whether the sword can be symmetrical or not and whether it can meet the requirements of the demanders mainly depends on this step.

Second, seasoning. As we all know, bronze is an alloy, which has no direct form in nature. It must be smelted and synthesized with specific metals (such as tin and lead), and the proportion of various metals naturally becomes the most difficult part. The technology at that time naturally added a lot of difficulty to this step. Through years of experience, swordsmen generally believe that it is not easy to reach 10% tin content, while Wang Yuejian and Wang Wujian have tin content close to 20%, which shows that their casting is very difficult! Third, smelting. After all the materials are prepared, the next step is the most critical melting: the raw materials are put into a crucible for quenching, and the main purpose is to remove impurities, such as various hydrides and sulfides existing in the raw materials. But this step is very important, which directly determines the quality of the finished product. According to an experienced foundry worker, this step can be divided into three steps: first, it will be black gas produced by charcoal combustion, then it will be a mixture of cyan and white due to the melting of copper, but mixed with impurities, and finally it will be cyan due to the complete melting of copper. This is also the origin of the word integrity. Fourth, casting. This step may be the simplest step, just pour the qualified bronze liquid into the original template and wait for it to slowly cool and solidify. 5. It is being processed. This is the last step and probably the most complicated one. What is cast on it is only a rough semi-finished product, so it needs a series of reprocessing. First, polish the surface of the sword to make it smoother; Then decoration, using tools to carve various patterns on the surface, and then using precious jade and other decorations; As the saying goes, a good horse with a good saddle and a good sword naturally need a scabbard to set off, so it is also a technical job to scabbard the sword. Finally, sharpen your knife, otherwise it is basically scrap iron, and it is useless to do the previous process no matter how well.

As far as blades are concerned, they can be subdivided. The sword maker thinks that white is hard, yellow is tough, and yellow and white swords are good swords, both tough and hard. Now it's called compound sword. Moreover, at that time, due to the extensive use of swords and the increasing development of technology, the casting quantity of composite swords was very large.

Although the composite sword is of high quality, the process is relatively complicated because of the different alloy degrees of its ridge and blade. Because the blade is mostly used for fighting, it has high tin content, strong hardness and is particularly sharp. In contrast, the sword ridge is relatively tough. Because of this, the composite sword needs to be cast twice. First it flows out of the groove on the ridge of the sword, and then the blade is embedded in it, thus creating a complete composite sword. This kind of sword is neither too hard nor too soft. This sword was made with different alloy distribution ratios, which all reflected the superb skills of ancient swordsmen. There are so many complicated steps and superb skills hidden behind a seemingly lightsaber. Besides admiring the wisdom and hard work of the ancients, what else can we use to express our inner feelings at this time?