3-Jiang-4-The main use of sea mussel fenugreek, the cover of its materials can be used in many aspects.
In the way of medicinal use, sea mussel fenugreek has certain medicinal effects. Its mild nature may regulate human qi and blood, and help relieve some diseases and pains. Ancient healers often used it as medicine and processed it to treat diseases such as epigastric pain and poor qi and blood. Because of the ingredients it contains, it can act on the qi and blood of human meridians and collaterals to achieve the purpose of promoting justice and removing evil spirits.
In the way of eating, the meat of sea mussel fenugreek is tender and delicious. It can be cooked by a variety of cooking methods, such as steaming, to retain its original flavor, so that its tender quality and delicious taste can be fully displayed; or stewed and integrated into the soup to make the soup delicious and nourishing. It is rich in a variety of nutrients, such as protein, trace elements, etc., to provide the human body with necessary nutrients and nourish the body.
In terms of craftsmanship, the shell of sea mussel and husk has a unique shape and solid texture. It can be used by craftsmen to make all kinds of exquisite handicrafts through carving, polishing and other skills. Or for ornaments, placed on the table to add elegance; or for accessories, worn on the body, unique style. Its unique texture and shape, through ingenious processing, has become a carrier of culture and art.
In addition, at the level of cultural meaning, sea mussel husk also has a deep meaning. In traditional cultural concepts, it is often given auspicious and beautiful meanings. Such as symbolizing reunion and harmony, it means smooth life and happy family. During folk activities and festivals, objects or images related to sea musk husk often appear in it, conveying people's expectations and wishes for a better life.

3-Jiang-4-Sea clam bead sharks, its physical properties can be studied. Sea clams are born at the intersection of rivers and seas. The shell is hard and elliptical, and its color is white or brown, with a certain luster. This is a sign of its physical appearance. The texture of the shell is hard and tough, which can resist the invasion of the outside world and protect its soft body.
As for the bead sharks, their body shape is slender, and the body surface has a special texture, which is streamlined, which is conducive to their swift swimming in the water. Its body surface is covered with fine scales, which are smooth to the touch. The color of the scales changes with the environment, either silver-white or blue-gray, which has a certain hidden effect.
Within the sea clam, a pearl can be conceived. The pearl is round and shiny, and has rich colors, including milky white, pink, and lavender. Its texture is warm and moist, and its hardness is moderate. The Mohs hardness is about 3, and it has good refractive properties. It shines brightly in light.
The fins of the shark bead are tough and elastic, and can swing flexibly in water to help it control direction and speed. Its skeletal structure is light and strong, which meets the needs of aquatic life. In addition, the eyes of the bead shark have a special structure, which is adapted to seeing objects in water and is sensitive to changes in light.
The physical properties of these things are closely related to their environment and survival habits, and each has its own wonders, making it a miraculous product of creation.

3-4-4-Stones have their properties of transformation, and are they constant? This is a question about physical properties. Between heaven and earth, all things have their properties, but their properties are constant or changing, and cannot be generalized.
Looking at all things in the world, there are those who are constant in nature, and those who are transsexual. For example, gold and stone, their quality is firm and stable, and they are not easy to change over time. And water is a thing, which is shaped with the vessel, condensed when cold, and melted when hot, and its properties are often easy.
As for the 3-4-stone, although it is not detailed what it is, it is common sense that if it is a stone or the like, the stone property is more firm and stable, and the transformation property may also be relatively stable. The formation of a stone can only take shape after years of sedimentation and geological changes. It is established. If there is no strong disturbance from external forces, such as high temperature, strong acid, heavy pressure, etc., its transformation property should be maintained constant.
However, it is not completely certain. Things in the world are often impermanent. Even if it is a stone, if it is in a special situation, such as a place with abnormal geothermal conditions, or encounters long-term erosion by strong corrosive substances, its transformation property may also change.
Therefore, if you want to know whether the chemical properties of 3-4-stone are stable, you need to carefully investigate the environment in which it is located. When you encounter external forces, you cannot rashly break its chemical properties and stability just because it is stone. When you are cautious and investigate in detail, you can get its true meaning.

There are many methods for synthesizing 3-ene-4-halogenated steroids, each of which has its own advantages. Here they are described as follows:
First, halogenated addition method. Select the steroid substrate containing the alkene bond and make it react with the halogenating agent under suitable conditions. For example, halogen elements such as chlorine and bromine, or halogenated hydrogen gases such as hydrogen chloride and hydrogen bromide are used as halogenating agents. During the reaction, the π electron cloud of the alkene bond is attacked by the electrophilic reagent of the halogenating agent to form a carbon positive ion intermediate, and then the halogenated negative ion is combined with it to obtain the halogenated steroid product. This method is simple and direct, but the regioselectivity is poor. The reaction conditions need to be carefully adjusted to increase the yield of the target product.
Second, nucleophilic substitution method. If the steroid substrate has a leaving group, such as a hydroxyl group, the halogen atom can be introduced through a nucleophilic substitution reaction. The hydroxyl group is first converted into a leaving group, such as p-toluenesulfonate, etc., and then reacts with halogen ions in the presence of suitable solvents and bases. The base can promote the nucleophilic attack of halogen ions and generate halogenated steroids. This method has better regioselectivity, but the steps are slightly complicated, and multiple steps are required to prepare a suitable substrate.
Third, free radical halogenation method. In the presence of an initiator, the free radical mechanism is used to realize the halogenation of steroids. Commonly used initiators include peroxides, etc. When heated or illuminated, the initiator decomposes to produce free radicals, grabs hydrogen atoms on the steroid substrate, and generates carbon free radicals. The carbon free radicals then react with the halogenating agent to obtain halogenated steroids. This method has mild conditions and can achieve halogenation at some special positions. However, the selective control of the reaction is difficult, and it is often accompanied by side reactions.
Fourth, the direct action method of halogenated reagents. Using special halogenated reagents, such as N-halogenated succinimide (NBS), N-halogenated acetamide, etc., these reagents can introduce halogen atoms into specific positions of steroid molecules with high selectivity under relatively mild conditions. Taking NBS as an example, it achieves halogenation reaction with steroid substrates under the action of light or initiator through the radical process of allyl or benzyl sites, with good regioselectivity and high yield.

In today's world, among the shops in the market, it is quite difficult to determine the price of 3-Jiang-4-Sea Clam Beads. The width and narrowness of the price are related to various reasons.
First, it depends on the quality of the beads. If the beads are round, shiny, and flawless, the price of such excellent beads will be very high. Or it can reach hundreds of gold or even thousands of gold. And if the beads are slightly less well-shaped and the luster is slightly darker, the price will drop sharply, or only a few tens of gold ears.
Second, it is related to the supply and demand of the city. When there are many beads in the market, and the supply is thin, the price will rise. For example, during the festival, or when the rich family is building construction and making Chinese clothing jewelry, the price of mussel beads is often high. On the contrary, if the supply exceeds the demand, the price will drop.
Third, the distance of the origin is also related. Those produced nearby, because of the saving of many transshipment fees, the price may be slightly flat. If you come from a foreign land and travel through land and water, the cost is quite huge, and the price will increase.
Generally speaking, the price of the ordinary 3-river-4-sea mussel beads may be between tens of gold and hundreds of gold. If it is a rare treasure, or if you encounter rich people competing to buy it, its price is difficult to limit, or thousands of dollars are unknown.