Our country first used brass to cast money in the Ming and Jiajing years. The word "brass" first appeared in the Western Shuo's Shenyi Jing, Zhonghuang Jing in the Western Han Dynasty: "There are palaces in the northwest, and brass is a wall, inscribing the palace of the emperor of the sun and the earth." This kind of "brass" refers to what kind of copper alloy, to be tested. The New Tang Dynasty Book of Food and Goods also has the names of "bronze" and "brass". Separation refers to ore color and smelting products, but in fact it is not the current copper-tin alloy and copper-zinc alloy. In Daye Fu written by Hong Zhikui of the Song Dynasty, "it is brass, pit has a special name and many mountains are simple", referring to pure copper made by pyrometallurgy. The term "brass" refers specifically to copper-zinc alloys, which began in the Ming Dynasty, and its records can be found in the Ming Huidian: "In the case of Jiajing, there are six million pieces of Tongbao Qian, which is applicable to 472,772 Jin of Erhuo brass...". Through the elucidation of the composition of copper coin in Ming Dynasty, the brass in the true sense of coin casting mentioned in Ming Huidian presented much later than other copper alloys, which was due to the comparative hardship of metal zinc in brass.

Zinc oxide can be quickly restored to metallic zinc at low temperatures from 950 to 1000 degrees Celsius, while liquid zinc boils at 906 degrees Celsius, so that the restored metallic zinc exists as vapor. When cooling, the reaction is reversed and the vapor zinc is oxidized to zinc oxide from carbon dioxide in the furnace. Therefore, to obtain zinc metal, special other condensation assemblies are necessary. This is one of the reasons why the use of zinc metal is much later than that of copper, lead, tin and iron. It is also one of the reasons why brass coins appear later.

However, there were brass sheets and brass tubes with zinc content over 20% unearthed in the Yangshao civilization relics of Jiangzhai, and two kinds of brass cones unearthed in the Longshan civilization strata of Sanli River in Shandong Jiao County. It is self-evident that the appearance of these brass objects does not mean that people have controlled the metallurgical techniques of brass in prehistoric times, but that they are unintentionally acquired when people use copper-zinc symbiotic minerals.

In Shang and Zhou Dynasties, the zinc content of copper ware was very low, usually in the order of 10-z. In the money of the Western Han Dynasty and Xinmang Dynasty, there were copper and zinc sums made by individual boards, and zinc contents in some money of the towel reached 7%. However, it can not be explained that brass coins occurred in Xinmang of the Western Han Dynasty. Because these copper-zinc alloys are very individual signs, their zinc content is much smaller than that of brass in the true sense of 15% to 40%. Therefore, we think that these zinc-containing copper coins occurred in the Han Dynasty when copper and zinc symbiotic mines were used in the "Jishan Casting Money".

According to the investigation of relevant mines, it was found that there are abundant copper-zinc symbiotic ores in Changwei, Yantai, Linyi and Hubei provinces in Shandong Province, which makes the smelted copper contain a small amount of zinc. In the Tang Dynasty, due to the standardization of money-casting materials, the zinc content in the money was constant. Brass products have been popular in Europe for about 300 years since about 1230, because they are much cheaper than large sculptures.

The bronze statue of Archbishop Wilp, which began in 1231, is the first known bronze statue made of brass. The process of forging brass products is as follows: first, the crushed and destroyed zinc ore and firewood carbon are mixed with copper blocks to heat, so that zinc and copper are combined, then the alloy is melted by heating, and then the liquid copper is poured into the casting mould. Britain's first brass was imported, mainly from Tourney. The client can order from Tourney a complete tombstone that was once mounted on a beautiful floor or marble base. The method of making bronze tombstones is to cast the bronze statues first, and to cast the sketches of the shelters around them on weekdays, then put them in the prefabricated slabs, and carve out the details of human beings with knives under the bronze statues. The hand and face of occasional bronze statues use alabaster or other mosaic materials. When the bronze statue is finished safely, it is fixed on the stone base with a hidden pin in a lead bolt. The bronze statue itself was placed on a layer of asphalt. Large bronze statues are forged in segments and then joined together.