In "Tiangong Kaiwu", borax and arsenic have different uses. Borax is cool in nature and has great uses in metallurgy, medicine, and chemical industry.
In the field of metallurgy, borax is a flux, which can reduce the melting point of metals, promote the separation of impurities, and improve the purity of metals. When casting swords, borax can make molten iron blend better. The blade is rigid and soft, and the cold light is dazzling. It cuts iron like mud.
In medicine, borax has the effect of clearing away heat, detoxifying, reducing swelling and antiseptic. For sore throat, borax is used as medicine to relieve pain and clear inflammation. Oral sores are eroded, and it can also produce muscles and reduce sores and restore oral health.
In the chemical industry, borax is an important raw material for making special glass and ceramics, which can increase its heat resistance, wear resistance and corrosion resistance.
Arsenic, the main component of arsenic trioxide, is a highly toxic substance. Although poisonous, it also has medicinal uses. A small amount of arsenic can treat certain blood diseases, fight poison with poison, and adjust the balance of the body. It is necessary to be careful when using it, and the wrong amount will cause disaster. In the past, doctors occasionally used arsenic to treat sores and diseases, and precisely controlled the amount, so that they could cure diseases without harming their lives.
In summary, borax is widely used. Although arsenic is toxic, it also has medicinal value when used reasonably. Both are witnesses to the wisdom of the ancients and play a unique role in various fields.

Mercury, commonly known as mercury, is the only metal that is liquid at room temperature. It has many unique physical properties.
Mercury has a high density, about 13.59 g/cm3, which is denser than common metals such as iron and copper, which makes it feel heavy. Its liquid fluidity is very good, and it can quickly spread out into tiny mercury beads on a smooth plane, and these mercury beads are easily rolled and fused.
Mercury has a melting point of -38.87 ° C and a boiling point of 356.6 ° C. This melting point keeps mercury liquid at room temperature, and its boiling point is relatively high. To convert mercury from liquid to gas, a higher temperature is required.
The surface tension of mercury is extremely high. This property allows mercury to maintain a nearly spherical shape when dropped on a plane, making it difficult to spread. In addition, mercury has good electrical conductivity. Although its conductivity is slightly inferior to that of silver and copper, it is also an excellent conductor and is often used in electrical equipment.
Mercury has a low vapor pressure. At room temperature and pressure, mercury will slowly evaporate to form mercury vapor. Although mercury vapor is colorless and odorless, it is highly toxic and extremely harmful to human health.
Mercury bromide, also known as mercury bromide red, also has unique physical properties. Mercury bromide is a red crystalline powder at room temperature and is odorless. Its density is about 4.09 grams/cubic centimeter. The melting point is about 250 ° C. It will decompose when heated above the melting point. Mercury bromide is slightly soluble in water and soluble in organic solvents such as ethanol and acetone. Under light, mercury bromide will gradually decompose and become darker in color.

Mercury is a highly toxic substance with unique properties. Mercury is liquid at room temperature and is a metallic element, also known as mercury. It is silver-white and has a metallic luster.
Mercury is volatile and can slowly turn into mercury vapor at room temperature. This mercury vapor is very toxic. When inhaled by the human body, it can cause serious damage to the nervous system, kidneys and immune system. Long-term exposure to low-concentration mercury vapor can cause chronic mercury poisoning. Symptoms can include headache, insomnia, fatigue, memory loss and other neurasthenia, as well as stomatitis and tremors.
Mercury is relatively stable in chemical properties, but it can form alloys with various metals. This alloy is called amalgam. At room temperature, mercury can rapidly combine with sulfur to form mercury sulfide, which is often used to treat mercury leakage accidents.
Mercury bromide, mercury chloride and other mercury compounds are toxic and have different solubility. Some mercury compounds will undergo redox reactions under specific conditions.
Children and pregnant women are particularly sensitive to the toxicity of mercury, and once exposed, the harm is even greater. Therefore, it is necessary to properly dispose of mercury-containing items, such as waste thermometers and sphygmomanometers, and must not be discarded at will to avoid mercury leakage and endanger the environment and human health. The use and management of mercury should follow strict regulations to ensure safety.

To make the combination of coloured glass and mercury cinnabar, there are various methods in ancient times.
First, take pure quartz, which is the foundation of coloured glass. Place it in a crucible and calcine it with fierce fire. In ancient times, calcination used charcoal fire and fan air to support combustion, so that the fire was fierce and lasting. When the quartz melts into a liquid, add a melting aid, such as saltpeter, in time to reduce its melting point and promote its uniform melting. In this liquid, specific metal oxides are added according to the side, such as copper oxide, which can cause the coloured glass to turn green, and cobalt oxide, which can make it blue. Carefully blended, it becomes various colors of coloured glass.
As for the combination of mercury cinnabar, mercury, which was called mercury in ancient times, was often refined in Dan sand. First smash the sand as the end, and place it in a special alchemy furnace. The furnace is divided into upper and lower parts, and the seal is tight. Simmer slowly under the fire, so that the sand is decomposed by heat, and the mercury gas rises. When it is cold, it condenses on the top of the furnace, and mercury can be obtained by means of a device. Cinnabar is mercury sulfide. To combine mercury and sulfur cinnabar, it is necessary to make mercury and sulfur co-heat and combine in an airtight container at an appropriate temperature. However, both are poisonous. When handling, avoid poisonous gas to prevent injury.
When making glass, the heat control is the key. If the fire is weak, quartz is difficult to melt, and if the fire is fierce, the glass is prone to bubbles and deformation. Looking at its liquid state, stir it in time to make its composition uniform, and it can become a pure-colored glass. The proportion of mercury cinnabar should also be accurate. If there is more sulfur, the cinnabar will be reddish and impure, and if there is more mercury, it will be difficult to combine, which will also affect the quality.
Ancient craftsmen, with experience and wisdom, have obtained these methods after countless attempts. Although the years have passed, the delicacy of their skills still amazes future generations.

Mercury is a highly toxic thing, its nature is yin, and it is very harmful to the human body. Alum mercury wolf poison is also a highly toxic product. When storing and transporting, you need to pay great attention.
When storing, the first heavy seal. When storing it in a strong and airtight device, to prevent the evaporation of mercury from escaping. Mercury is easily volatilized into mercury vapor, which is inhaled into the human body and damages the organs, especially the brain and kidneys. And the place where it is placed is suitable for a cool and dry place, protected from heat and light. Heat accelerates the evaporation of mercury, increasing its harm.
Furthermore, the logo is clear. On top of the reservoir, the big book "Highly Toxic Mercury" and other eye-catching words make it obvious to others that it is dangerous and will not be touched by mistake.
When it is transported, the transporter must receive professional training, be familiar with the characteristics and dangers of mercury, and understand emergency measures. During the handling process, handle it with care to avoid mercury leakage due to collision damage.
If unfortunately mercury leaks, take measures to deal with it quickly. Open the window for ventilation quickly to reduce the concentration of mercury vapor. And sprinkle sulfur powder on the leak, mercury and sulfur are easily combined into mercury sulfide, which is greatly toxic. Clean up the residue, do not discard it at will, and dispose of it in a special way to avoid polluting the environment.
As for alum mercury wolf poison, similar regulations are followed in Tibet and transportation. Its poison is strong, cannot be touched, and the packaging is tight to ensure safe transportation and comprehensive protection, so as not to harm people and the environment.