1 Iodonaphthalene

In the field of agriculture and mulberry, the roach can be called a beneficial insect. It is good at catching pests, and many insects that harm crops, fruit trees, and vegetables are good for the roach. Such as locusts, when they are in groups, they often destroy large areas of crops, but when the roach encounters them, they use their agility and sharp capture to capture the locusts, so that they cannot wantonly damage crops, protect the peace of the farmland, and ensure the harvest of crops. It is difficult to estimate the benefits to agriculture.
In the field of medicine, the roach is also valuable. The roach contains many special substances, which can be used as medicine after processing. It has long been recorded in traditional medical texts that it can clear the meridians and collaterals, dissipate blood stasis, nourish the kidneys and improve sperm, etc. In case of bruises and injuries, blood stasis blocks the meridians, causing poor qi and blood flow, and unbearable pain, the medicine made by the roach may play a role in dredging the meridians and collaterals, dissipating blood stasis, and relieving the pain of the patient.
In the forest of culture and art, the roach also has a unique position. Throughout the ages, many literati and writers and danqing experts have used the roach as a source of inspiration. Poets give poems to them, and painters paint them with paintings. Its form and spirit are both in the state, or jumping in the poem, or on the picture scroll, adding a lot of charm and agility to the culture and art. And in some legends and stories, the cockroach often has a unique meaning, carrying the wisdom and imagination of the ancients, passed down to today, and enriching the connotation of folk culture.
The cockroach has important uses in agriculture, medicine, culture and art, etc., and is really a creature that cannot be underestimated.

Tridacna is a genus of marine shellfish, with various physical properties. Its shell is very thick, solid and huge, and its shape is mostly oval, with slightly pointed ends, and its surface often has deep grooves and scales.
When it comes to texture, the shell of tridacna is extremely hard, which can be the basis for the long-term retention of utensils. Its hardness is quite high, and it is difficult to damage it by ordinary friction. This characteristic makes the tridacna intact as the years pass.
The color of the tridacna is gorgeous and colorful. Common ones are white, which is pure like snow and bright and flawless; there are also yellow, which is like the light of the warm sun, warm and soft; more pink, like peach blossoms in spring, delicate and charming. All kinds of colors, either single and pure, or mixed and blended, constitute the unique beauty of Tridacna.
The luster of Tridacna is not eye-catching of gold and silver, nor is it restrained by jade. It has a unique warm and soft charm. It is like the moonlight falling on it, emitting a quiet brilliance, and viewing it makes people feel at peace.
Furthermore, Tridacna has a certain degree of transparency. Viewed under light, some areas are transparent, and light and shadow are intertwined, showing a spiritual state, adding a mysterious atmosphere to it.
And the proportion of Tridacna is moderate, holding it in the hand, it has a sense of calmness, and it is comparable to something not frivolous. This physical property makes Tridacna a real experience on the touch.
To sum up, Tridacna is unique among marine objects due to its solid shell, rich color, warm light, and moderate transparency and specific gravity, and is valued by the world.

Arsenic is also a chemical substance, and its chemical properties are determined under normal conditions. Arsenic, known as arsenic trioxide, is a white, smelly powder with stable properties.
In general environments, arsenic is not easy to cause strong reactions to other substances. However, it is also uncertain. If it encounters oxidation, such as high acid, etc., under specific conditions, it can also generate oxidation reactions, causing the synthesis of arsenic to increase.
In addition, if it encounters raw materials, such as certain gold or raw materials, under the conditions of combination, acidity, etc., the arsenic in arsenic can also be synthesized to form other arsenic compounds.
In addition, arsenic is soluble in acids, such as acid, sulfuric acid, etc., to form arsenic, and this process has also changed its chemical form.
The chemical properties of arsenic are determined, but due to the toxicity of arsenic, even if its chemical phase is not generated, once it enters the biological body, it can interact with biological macromolecules such as protein molecules, dry the normal physiological functions of organisms, causing poisoning and even life-threatening. Therefore, its chemical properties have a certain degree of certainty, but it still needs to be treated with caution, and its toxicity should not be ignored because of its phase.

The method of making turtles is quite exquisite. In ancient times, people made turtles according to the season. In spring, when the turtles are not fat, few people make them; in summer and autumn, the meat of the turtles is tender and rich in plaster, which is the best time to make turtles.
The first method of making turtles is to choose turtles. You need to choose those with a turtle-brown back, a white belly, a shiny belly, and flexible limbs. Such turtles are full of vitality and must have good meat quality.
The method of slaughtering turtles is to first lead the turtles out of the head with bamboo chopsticks, quickly cut off their head, and drain their blood. After the blood is cleaned, put the turtles in boiling water and blanch them slightly, and remove the outer skin of the turtles. If the skin is not removed, it will have a fishy smell.
Then break the belly of the turtles Do not break the gall of the turtle. The bile can be applied to the turtle meat and rubbed slightly to make the turtle meat remove the fishy smell and add a little fragrance.
There are also various ways to cook. The common one is steaming. Cut the turtle into pieces and put it in a bowl, add onion and ginger, cooking wine, and a little salt, and steam it in a cage drawer over high heat. The heat is very critical. If it is steamed for too long, the meat will be easy to age; if it is not steamed through, the meat will be chewy and have a fishy smell. Steam for about half an hour, until the turtle meat is cooked, take it out, drizzle it with hot oil, and the aroma will overflow.
There is also a method of braised. First blanch the turtle pieces in boiling soup to remove their floating foam. Put oil in the pot, after the oil is hot, add ginger slices and saute until fragrant, stir fry the turtle pieces until they change color, add soy sauce, a little sugar color, add an appropriate amount of water, bring to a boil over high heat, and then turn to low heat and simmer slowly. Flip it in a timely manner to make the turtle meat evenly tasty. When the soup is thick and the turtle meat is red and bright, it can be brought out of the pot. In this way, the turtle is made with complete color and aroma, which is really a delicacy.

Mercury, hiding and transportation, many matters need to be paid attention to.
When storing mercury, the first thing to weigh is its utensils. It must be stored in a secret container to prevent it from escaping. Because mercury is volatile, if the utensils are not dense, mercury gas will be scattered around, harming people and things. And the hiding place should be cool and dry, protected from heat and light. The faster the evaporation of mercury in heat, light can also promote its change and damage its quality.
Furthermore, mercury is toxic. The hiding place should be far away from people and all kinds of food. If you accidentally touch it, or inhale mercury gas, it can cause illness, lightly damage the organs, and can endanger life. Therefore, the place where mercury is hidden needs to be marked, and the police should not approach it.
As for transporting mercury, the robustness of the equipment is crucial. The transportation route is bumpy, and if the vessel is not strong, the mercury is easy to pour. After dumping, it is extremely difficult to clean up, and the mercury gas is overflowing, and the disasters are endless.
People transporting mercury also need to be well protected. Wear special clothing, masks, and gloves to prevent mercury from touching the body and entering the body. And the transportation should be slow and stable, to avoid sudden stops, and to prevent mercury from vibrating out of the vessel.
In addition, the route of mercury transportation also needs to be selected in detail. Avoid places with many people, and avoid places with water sources. If there is mercury leakage in many places, it will hurt many people; if there is mercury leakage near the water source, the sewage source will have far-reaching consequences.
In general, the storage and transportation of mercury is related to safety, and all things need to be cautious and not slack at all.