The origin of brass

The term "brass" first appeared in the scripture "Shenyi Jing · Zhonghuang Jing" written by Dongfang Shuo in the Western Han Dynasty, which recorded: "There are palaces in the northwest, brass is the city wall, and the palace is the imperial palace.
What kind of copper alloy does "brass" refer to? There are also titles for "bronze" and "brass" in the "New Book of Tang Food Chronicles", as well as "Daye" written by Hong Zikui, which is also brass. Pit has a special name, "Shanduo Simple", referring to pure copper made by fire.

However, brass coins appeared late because zinc oxide can be rapidly reduced to metallic zinc at 950 ℃ -1000 ℃, while liquid zinc boils at 906 ℃, so the reduced zinc exists in the form of vapor. During cooling, steam zinc is carbon dioxide in the furnace, which is then oxidized to zinc oxide. Therefore, a special condensing device is necessary to obtain metallic zinc. The above situation refers to the use of zinc

One of the reasons why copper, lead, tin, and iron appeared much later than copper, lead, tin, and iron, and also one of the reasons why copper, lead, tin, and iron appeared later.

According to records, the term "brass" refers to a copper zinc alloy that originated in the Ming Dynasty: "In the Jiajing period, there were six million coins wrapped in copper, plus 47272 pounds of second flame brass? Through the analysis of the composition of copper currency in the Ming Dynasty, it was found that the true meaning of brass in the Ming Huidian copper casting appeared much later than other copper alloys, due to the difficulty in obtaining metallic zinc in brass.