Sodium cyanide has a wide range of uses. Although there is no such accurate understanding as modern times in ancient times, some activities are related to it. The following is explained in classical Chinese form:

Sodium cyanide is very important in the mining and metallurgy of precious metals such as gold and silver. In the past, although the name of sodium cyanide was not explicitly stated in the art of gold mining, it was a hidden principle. If you want to get gold, dig the ground for ore, crush it, and leach it in liquid. This liquid or something containing sodium cyanide can dissolve gold in the middle, and then precipitate it by method, and gold is obtained.

In metallurgy, sodium cyanide is also very useful. It can help remove impurities and make the metal pure. If you cast a good weapon, the metal will be strong and beautiful.

Furthermore, in chemical synthesis, although there was no complicated chemical system like today in ancient times, sodium cyanide can be used in the preparation of various compounds. Its nature is active, and it can combine with other things to form a useful agent.

Although sodium cyanide has significant effects, it is highly toxic, so be careful when using it. Although the ancient actions were not well aware of its poison, they should also be in awe and avoid disasters.