"Mercury, its essence is agile and lively, its shape is like a bead, and its color is as white as silver, so it gets this name. It is one of the metals, and its properties are different from others."
Mercury, that is, mercury, is a liquid metal. Under normal temperature and pressure, it is in a flowing state, like a ball rolling, and shimmering silver light. Its melting point is extremely low, only -38.87 ° C, and its boiling point is only 356.6 ° C. Due to its extremely low melting point, it is always a liquid in ordinary temperature environments, and it does not flow. This is a significant physical property of mercury.
Furthermore, mercury has a high density, reaching 13.59 grams/cubic centimeter, which is much denser than common metals such as iron and copper. Due to its high density, if accidentally sprinkled, it will quickly disperse into many fine mercury beads, rolling around, making it extremely difficult to collect completely.
Mercury also has a large surface tension, which is often integrated into round mercury beads and is not easy to adhere to the surface of other objects. And mercury has good electrical conductivity. Although it is liquid, it can conduct electricity like a solid metal, and is widely used in the electrical field.
However, mercury is volatile. In a room temperature environment, it will slowly evaporate into mercury vapor, which is highly toxic. If inhaled by the human body, it is easy to cause mercury poisoning, damage the nervous system, kidneys and other organs, and endanger life and health. Therefore, when using mercury, you must be extremely cautious to ensure safety.

"Tiangong Kaiwu" says: "The finless porpoise is black in color, often swims in the river, and has a smart nature, which is amazing to everyone. The oil and gas of the finless porpoise has various characteristics."
The oil and gas produced by the finless porpoise is the first to be flammable. If it is close to the fire, it will ignite immediately, and the flame is bright and intense. It can be used as a lighting aid. In the past, when there were few candles and few lamps, it was quite useful. When sailing at night, the road ahead will be slightly brighter.
Second, its oil and gas have anti-corrosion properties. Applied to the wood, it can slow down the decay of the wood and make the wood durable. Wooden boats are often coated with this oil, which can keep them in the water for a long time, less susceptible to water erosion and insect moths, and prolong the service life of the boat.
In addition, finless porpoise oil and gas have a healing effect. If a person is injured by a fall, the skin and flesh are blue and purple, take a little oil and gas, apply it to the wound, and gently rub it, which can promote blood circulation and dissipate blood stasis, slow pain and reduce swelling. There are often people who heal by this method in the folk, and it is quite effective.
However, finless porpoise is a spiritual thing in the river. At present, it is also known that its number is gradually decreasing. In order to ensure the continuation of the finless porpoise population, it must not be hunted and killed for its oil and gas benefits. When observing the rules of nature and protecting this

In "Tiangong Kaiwu", the swim bladder is the swim bladder, and its main uses are as follows:
The nature of the swim bladder is very tough. Its first service is to use it to make glue. Where the bow is used to bridge the gap between the bow body and the string, the glue of the Duolai River swim bladder. This adhesive is very good, and it can make all parts of the bow closely connected to ensure that it does not break when it is relaxed, so as to maintain good performance. It is effective in shooting and other things.
In addition, the swim bladder is also very useful in the repair and splicing of wood. If the wood has the risk of loosening the tenon and mortise and separating the parts, gluing the river swim bladder can make it as strong as ever. Its adhesive force is strong, which can withstand the test of time and external forces, so that the wooden ware can remain intact for a long time.
And the glue made by Jiang bladder is also indispensable for the mounting of calligraphy and painting. The calligraphy and painting paper is light and fragile, and multiple layers of paper need to be bonded when mounting. The adhesive property of Jiang bladder is mild, which can be firmly bonded without damaging the paper, and it can be stored for a long time. It can ensure that the painting and calligraphy pass through the years and the mounting work is still in good condition, so that the beauty and preservation period of calligraphy and painting can be improved.
In addition, in some exquisite handmade products, such as the production of various exquisite boxes, the bonding of handicrafts, etc., Jiang bladder glue is also favored by craftsmen because of its unique stickiness and quality, helping them to create exquisite and firm utensils.

To make the silvery liquid of the river mussels, there are three ancient methods, which are as follows.
First, pick the mussels on the bank of the clear stream, and choose the one with a good shape and a moist shell. Place it in a large urn, fill it with water, cover it with a straw mat, and wait for a few days until it spits out the silt. Then take the mussel meat, grind the juice with a cloth, and serve it in a crock pot. Prepare a little mercury, put it in the mussel juice, and stir it slowly with mahogany branches, waiting for it to dissolve. In the meantime, you must avoid sunlight, lest it change. When the two are mixed into one, the liquid will be formed, the color is light silver, and the brilliance is faint.
Second, take a number of mussel shells, wash and bake them dry, grind them into fine powder, the finer the better. Place in an iron kettle and stir-fry slowly over a gentle fire until its color turns slightly yellow. At this time, slowly inject turpentine oil, stir while injecting, so that the clam powder and oil are evenly mixed. Continue to stir-fry for a while, until it is thick as a paste, remove from the fire and cool. Take a little lead pill again, grind it finely and adjust it, and then warm it over a slight fire, so that the materials are permeable. The resulting liquid is coated with the mussel body, which can show silver brilliance and last for a long time.
Third, find the shell of the old mussel, soak it in rice swill for seven days, and change the swill once a day. Take it out when it expires, expose it to the scorching sun, until its shell is brittle. Use the pestle mortar to form a powder and sift it very fine. Put this powder and white wax in a copper pot and boil it over charcoal fire. When the white wax is completely melted, the two are integrated into one, and cease fire. Wait for it to cool down a little, pour it into a porcelain bowl, and wait to set. When used, melt it with warm water and apply it to the mussels, it will be the color of silver, just like heaven, shiny and radiant.

4 - It is hard and poisonous to hide in the environment.
First of all, the hidden environment must be dry, clean and transparent. Because it is easy to be invaded by moisture, if the environment is wet, it will affect its efficacy, or even cause toxicity to increase. And the source of fire is high. In this case, it may decompose or explode, endangering life and safety.
Furthermore, the storage container should not be ignored. It is appropriate to use dense ceramic jars, glass bottles, etc., which can not only effectively isolate air and moisture, but also prevent the loss of food. Do not use gold containers to prevent the chemical and biochemical reactions of the material and improve the performance.
For the first time, the package must be fixed. Wrap it with soft things first, such as cotton wool, cotton, etc., to avoid shaking and collision. Then place it in the solid box and fill it with shock-proof materials around to ensure that it is not damaged during the journey.
Human operation also needs to be careful.
Hiding and moving, those who pick up the stone should wear anti-dumping equipment, such as gloves, masks, etc., to avoid the material directly connecting to the respiratory tract of the skin, in order to prevent poisoning.

The process of hiding the stone should be well-packed. In and out of the box, quantity, storage, etc., in order to track the direction of the material. Once there is a problem, it can be checked and handled to ensure the safety of the stone. Efficacy.