Erxian Decoction is a traditional Chinese medicine prescription, from "Obstetrics and Gynecology" (edited by Shanghai University of Traditional Chinese Medicine). Its main use is quite extensive, in the field of gynecology, it is often used to regulate female endocrine, and has a significant effect on menopausal syndrome. Many women enter menopause, due to the decline of ovarian function, estrogen levels fluctuate or decrease, hot flashes, night sweats, upset insomnia, sore waist and knee and many other discomforts. Erxian Decoction can effectively relieve such symptoms by adjusting the balance of yin and yang.
Analyzed from the theory of traditional Chinese medicine, Erxian Decoction uses Xiancao, Xianling Spleen (Epimedium), and Morinda to warm the kidney and yang, and nourish the kidney essence; Anemarrhena and Huangbai to nourish the kidney and yin, diarrhea and The combination of the whole prescription is exquisite, and the yin and yang are adjusted at the same time, so that the yin and yang in the kidney are balanced, and the qi and blood are reconciled.
In clinical application, in addition to menopausal syndrome, Erxian Decoction also shows good curative effect on endocrine disorders such as polycystic ovary syndrome and premature ovarian failure. Some patients with polycystic ovary syndrome have symptoms such as irregular menstruation, infertility, and hirsutism. The pathogenesis often involves the imbalance of kidney yin and yang. Erxian Decoction can adjust the body's yin and yang, improve the endocrine state, and help restore the normal menstrual cycle and ovulation function.
In addition, in some andrological diseases, if the pathogenesis is consistent with the deficiency of kidney yin and yang, Erxian Decoction may also have certain application value. Some men have symptoms such as sexual dysfunction, sore waist and knee due to insufficient kidney yang and kidney yin deficiency. Erxian Decoction can play a role in warming the kidney and strengthening yang, nourishing yin and filling essence, and improving symptoms.
In summary, Erxian Decoction plays an important role in the treatment of various diseases caused by kidney yin and yang imbalance, relieving pain for many patients.

Mercury disulfide (HgS), also known as cinnabar in ancient times, has the following physical properties:
- ** Color morphology **: It is often bright vermilion, with various crystal forms, commonly rhombohedral, plate-shaped or columnar, and aggregates are lumpy and granular. "Tiangong Kaiwu" says: "Where cinnabar is of high quality, the burrow soil is more than ten feet, and its seedlings are first seen. It is a white stone bed, and there are red spots on the stone, so the stone is taken from it. The big one is like a chicken, and the small one is like a bean grain, which is cinnabar." This description shows the block shape and color characteristics of cinnabar.
- ** Hardness specific gravity **: The Mohs hardness is about 2-2.5, the texture is relatively soft, and the nails can be scratched to leave marks. The specific gravity is large, about 8.0-8.2, and it feels heavy. It has a high density due to the large atomic weight of mercury. As ancient books say, cinnabar of the same volume is heavier than other things.
- ** Glossy Transparency **: With diamond luster to semi-metallic luster. Under the irradiation of light, the surface reflects light and shines brightly. Transparency is translucent to opaque. Those with good quality have good light transmission. Some cinnabar flakes can pass through a small amount of light.
- ** Cleavage characteristics **: The cleavage is incomplete. When it is broken by external force, the fracture surface is irregular, and there is no specific direction to smooth the cracking. This is different from the regular cleavage of some minerals.
- ** Solubility **: Mercury sulfide is chemically stable and insoluble in common solvents such as water, hydrochloric acid, and nitric acid. Only in aqua regia (concentrated hydrochloric acid and concentrated nitric acid mixed at 3:1) or hot concentrated sulfuric acid and other strong oxidizing and strong acidic mixtures, it is slowly dissolved under heating conditions. This property enables cinnabar to exist stably for a long time in nature and in general environments.

Mercury dimercaptan is a chemical substance with many strange properties. It is often silver-white in color, solid in texture and metallic luster, and shines brightly.
The melting point of this substance is quite low, only -38.87 ° C. Under normal temperatures, it can be turned into a flowing state, like smart mercury, rolling freely on the utensils, slippery without leaving hands. The boiling point is 356.6 ° C. It is easily vaporized into mercury vapor when heated. This vapor is colorless and odorless, but extremely toxic. It pervades the air and quietly erodes human health.
Mercury dimercaptan is chemically stable and does not react easily with oxygen at room temperature. However, under heating conditions, it can combine with oxygen to form mercury oxide. It can interact with many metals to form amalgam, which is quite useful in metallurgy and other fields.
In addition, dimercapto-mercury has good electrical conductivity and is also used in electronic instruments. However, due to its severe toxicity, it is very harmful to the human body. If accidentally exposed to or inhaled its vapor, it will damage the nervous system, kidneys and other important organs, causing tremors, insomnia, kidney failure and many other diseases. Therefore, when using and disposing, it should be extremely cautious and follow strict safety procedures to prevent endangering life and health.

The synthesis of disulfide and chlorine, although not detailed in ancient books, is based on today's chemical principles, and there are various ways.
First, sulfur and chlorine are used as raw materials. Sulfur is a common mineral, warm in nature, sour in taste, and toxic. Chlorine is a yellow-green gas, which is highly irritating and corrosive. Heat sulfur to a molten state, and introduce an appropriate amount of chlorine gas, and a chemical reaction can occur between the two. The process is as follows: Sulfur is heated and melted, and sulfur molecules are active. When exposed to chlorine gas, chlorine atoms interact with sulfur atoms to form disulfide and chlorine. This reaction needs to be carried out in a specific container, and the temperature and the amount of chlorine gas must be precisely controlled. If the temperature is too high, the reaction speed will be too high, and the product will be impure; if too much chlorine is introduced, other chlorine-containing sulfides will also be formed.
Second, it can be obtained by reacting other sulfides with chlorine-containing compounds. If a certain sulfur-containing salt and a chlorine-containing halogen are used, under specific reaction conditions, it is also expected to synthesize disulfide and monochlorine through metathesis reaction or oxidation reduction reaction. This method requires fine screening and pretreatment of the raw materials used, and appropriate reaction solvents and catalysts should be selected to promote the reaction and improve the yield and purity of the product.
Or an indirect method can be tried. The intermediate product containing disulfide bonds is first synthesized, and then chlorine atoms are introduced through the chlorination reaction, and finally disulfide and monochlorine are obtained. Although this approach is slightly complicated, the reaction process can be more finely regulated, which is conducive to obtaining high-purity products.
The method of synthesizing disulfide and monochlorine needs to be based on actual conditions and needs, weigh the advantages and disadvantages of each method, choose carefully, and operate carefully to achieve the desired goal.

When storing and transporting dimercapto monosodium, everyone should pay attention to it.
When storing, the temperature and humidity of the environment should be the first priority. This medicine should be stored in a cool and dry place, protected from high temperature and humidity. High temperature can cause its chemical structure to mutate and reduce its efficacy; moisture can easily lead to deliquescence and damage its quality. The temperature of the warehouse should be controlled within a specific range to ensure its stability.
Furthermore, light is also the key. Dimercapto monosodium should be stored in the dark to prevent light from causing it to decompose. It can be placed in a brown bottle or a container with a shaded package to prevent light intrusion.
and needs to be isolated from other objects. Due to its unique chemical properties, contact with certain substances, or chemical reactions, drug-causing changes. Such as oxidizing agents, acids, alkalis, etc., should be kept away, and it is advisable to store in separate warehouses or partitions.
As for transportation, it should not be ignored. First, the packaging must be stable. Choose solid, sealed packaging materials to prevent damage to the container during transportation and drug leakage. Second, pay attention to the transportation environment. According to storage requirements, control the temperature and humidity in the car. If long-distance transportation, equipment is required to keep the humidity constant. Third, strictly abide by transportation regulations. According to relevant regulations, with suitable transportation tools and personnel to ensure transportation safety, and transportation records are kept in detail for traceability. In this way, only when storing and transporting dimercapto monosodium can its quality and efficacy be guaranteed, and a reliable medicine can be prepared for rescue.