1 Iodoctan

The main use of snails, covered with two ends. One is edible, and the other is used as medicine.
Looking at consumption, snail meat is delicious and nutritious. It is rich in protein and can be needed for human nourishment. There are various cooking methods, either stir-frying, boiling, or steaming. When frying snails, add seasonings such as onion, ginger, garlic, and chili peppers, and stir-fry on high heat. The fragrance is overflowing and mouthwatering. Boiled snails retain their original flavor. The soup is delicious, and the snail meat is tender and smooth, which can be used as a delicacy for wine. And snails are in folk food customs, and they are often found on the table, which is a favorite food for everyone.
As for medicine, snails are sweet and cold, and have the effects of clearing heat and water and detoxifying. There are many records in ancient medical books, such as treating red eyes, swelling and pain, taking juice from snails and dripping it into the eyes, which can relieve eye diseases. It can also be used to treat jaundice, beriberi and other diseases. The snail is combined with other medicinal materials, and the decoction is taken internally, which can improve water, reduce yellowing and remove dampness. However, when taking medicine, you must follow medical principles and do not do it yourself.
The snail has its important uses in the fields of diet and medicine, and it is actually a good thing given by nature.

"Tiangong Kaiwu" was written by Song Yingxing in the Ming Dynasty. It records a lot of craftsmanship and product knowledge in a concise and detailed style. However, in ancient books, there are few special accounts of the physical properties of "octopus". Today, I will try to briefly explain the physical properties of octopuses in the style of ancient Chinese.
Octopuses, born in the sea, have a unique shape, round body and small head, eight wrists and feet, soft and flexible, and each wrist has suction cups, which are used to absorb foreign objects or catch prey. Its color often changes with the environment, whether red or brown, or yellow or white, which can mimic the color of the surrounding objects and hide in it to avoid natural enemies and facilitate hunting.
Octopus is cunning and intelligent, and its intelligence is excellent among aquarists. When encountering enemies, it can spray ink to defend itself, and the ink color is pitch black, making the water chaotic, so it can take the opportunity to escape. And with its flexible arms and feet, it can climb reefs and corals, and travel freely in complex seabed environments. Its movements are agile, it can quickly shrink its body, jet water, and use force to rush.
When it comes to eating, octopus meat is tender and rich in nutrients. After cooking, the taste is delicious, either boiled or fried, or fried or mixed. However, its nature is cold, and eating too much may hurt the spleen and stomach.
Furthermore, octopus is used in the ancient books of traditional Chinese medicine Materia Medica, or it also has medicinal effects. However, in this regard, it is still necessary to study the medical records of the past dynasties in detail to have an accurate understanding. In short, although the octopus has not been written in "Tiangong Kaiwu", it has a place in marine life with its unique form, habits and value.

Arsenic is a highly toxic substance. Its chemical properties are not stable. The main component of arsenic is arsenic trioxide ($As_2O_3 $).
This arsenic trioxide, in which the arsenic element is + 3 valent. The + 3 valent arsenic has strong reducing properties. When it encounters an oxidizing agent, it is easily oxidized and the valence state increases. For example, under suitable conditions, it can be oxidized by oxygen to form higher valence arsenic-containing compounds.
And arsenic can react with many acids and bases. When it encounters acid, it can produce corresponding salts and other products. Take hydrochloric acid as an example, although the reaction is not very violent, it can also change under specific conditions. In the case of alkali, salts can also be formed. This all indicates that its chemical properties are more active and not stable.
Furthermore, from the perspective of its behavior in the environment, arsenic can migrate and transform in water, soil and other media. In water, its existing form will change due to factors such as pH and redox conditions of the water body, which also highlights the instability of its chemical properties.
From this, it can be seen that the chemical properties of arsenic are difficult to be called stable. Under many circumstances, it can undergo chemical reactions, showing the characteristics of active and changeable.

The method of making "arsenic crane" by husband has always been a secret technique of immortals, which has been passed down to the world, but there are occasional clues in the fragments of ancient books.
First, the thousand-year-old black ice in the extremely cold land is collected. This ice gathers the cold air of heaven and earth and condenses in the long time. When taking ice, you need to choose the night of the full moon and use jade utensils to fill it. Because of its cold nature, it can keep the ice pure and not stained by the turbid air of the world.
Second, look for the highly poisonous grass in the deep mountain jungle. The leaves of this grass are as red as blood, and ordinary people can hurt it when they touch it. Those who pick grass need special skin bags to prevent venom from entering the body. Put the plucked grass on top of the thousand-year-old mysterious ice, and use the cold power of the mysterious ice to force out the poisonous essence of the grass. When the grass withers and the ice melts, collect its juice. This juice is highly poisonous and is the key material for making arsenic cranes.
Third, the feathers of the spirit-seeking bird, this bird needs to be born on the top of the mountain, soaring between the clouds and the sea, with a high character and purity, not stained by the world. Take its wing feathers, roast them with a secret method, until the feathers are golden in color, and emit a strange aroma. Then put the feathers in a vessel containing highly poisonous juice, and use the principle of yin and yang to reconcile, so that the feathers can absorb its poison, and then take them out after seventy-seven and forty-nine days.
Fourth, the outer meteor iron is cast into a crane-shaped mold. This iron is hard in texture and has undergone the transformation of the stars, containing the spirit of heaven and earth. The drug-taking feather is placed in the mold, and then poured into a special medicinal pulp. This medicinal pulp is made from dozens of precious herbs. It needs to control the heat and time, and no mistakes can be made. When the medicinal pulp solidifies, open the mold and take it out, this is the prototype of the arsenic crane.
Finally, the prototype is placed in the pill furnace and calcined with three-flavor real fire. When the fire starts, it needs to be blessed with a specific spell, so that the arsenic crane is baptized by the spiritual energy of heaven and earth and the real fire of yin and yang. After 991 days of calcination, when it is formed, the arsenic crane can be obtained. However, this technique is very dangerous. If you are not careful, it will be highly toxic and endanger your life. Those who have the ability to reach the sky and extraordinary courage should not try it easily.

Mercury is also a highly toxic substance. During storage and transportation, many matters must be paid attention to.
First safety protection. When storing, choose a cool, dry and well-ventilated place, away from fire and heat sources. Because it is volatile and highly toxic to steam, the storage place must be tightly sealed to prevent mercury vapor from escaping and endangering surrounding people and animals. Operators should also wear protective clothing, gas masks and gloves, and must not be negligent to prevent mercury from contacting the skin, absorbing through the skin, and causing poisoning.
When transporting mercury, be sure to pack it firmly and tightly. It is often packed in a special thick-walled glass bottle or metal container, and a small amount of water is filled in the container to reduce mercury volatilization. Warning signs such as "highly toxic items" and "handle with care" should be clearly marked on the outside of the container. During transportation, the traffic must be smooth to avoid bumps and collisions to prevent the container from being damaged and the mercury liquid from leaking.
If a mercury leak unfortunately occurs, do not panic. When evacuating surrounding people quickly, turn on ventilation equipment to reduce the concentration of mercury vapor in the air. When dealing with leaked mercury, you need to be careful. Use a dropper or tinfoil to collect the spilled mercury beads and place them in a container filled with water. Tiny mercury beads that are difficult to collect can be covered with sulfur powder, so that the mercury reacts with it to form mercury sulfide to detoxify it, and then clean it up.
When storing and transporting mercury, safety is of paramount importance, comprehensive protection, and prudent operation are required to avoid toxic harm and ensure the well-being of everyone and the tranquility of the environment.