4-Pyridinecarbonitrile

4 - What is the main purpose of going to its armor?
To its armor, as recorded in the "Tiangong Kaiwu", is the meat used for sacrifice or gift in ancient times. Its use is primarily in sacrificial ceremonies. Ancient sacrifices were heavy and heavy, related to worshiping gods and serving ancestors, and maintaining patriarchal ethics. In festivals, to its armor is a necessary sacrifice, to show respect and piety to gods and ancestors. Emperors offer sacrifices to heaven and earth, mountains and rivers, ancestral temples, princes, and ministers offer sacrifices to society, etc., all of which are offered before the throne of the gods. May the gods and ancestors protect the wind and rain, the country and the people, and the family prosper.
Furthermore, to its armor is also used for gifts between people. In the traditional customs of courtesy exchanges, giving a gift is a way to show respect and friendship. For example, the alliance of princes and the visit of scholars and officials, using a gift as a ceremony can consolidate friendship, highlight status, and be followed in social situations. This move is not only a material exchange, but also contains cultural and moral implications, strengthening interpersonal bonds and stabilizing social order.
In addition, in some specific ceremonial occasions, such as crowning ceremonies, weddings and other important ceremonies in life, it is also used. The crowning ceremony symbolizes the man's adulthood, and the crowning ceremony is used to worship the ancestors and inform the family's successors; during weddings, the crowning ceremony is used to entertain guests and friends, symbolizing the solemnity of marriage and family harmony. To sum up, it plays a key role in the aspects of sacrifice, social interaction and ritual in ancient society, carrying profound cultural and social significance.

4 - The rational factors that go to its armor include: color, taste, earth, softness, cold, etc.
If the husband goes to its armor, the first color is its color. Or as red as Zhu Dan, the eyes are like the prosperity of fire; or as golden, shining, if it is ripe in autumn; or as white as frost and snow, the flaws are like the winter. The color is different, its nature or.
The taste is observed again. The taste is sweet, sour, bitter, pungent, and sweet. The sweet taste is peaceful, and it can be stable; the sour taste is collected, but it can be fixed; the bitter taste is clear, and it can be dry and energy; the pungent taste is scattered, but it can be passed; the taste is good, and it can be used.
The taste is special, and the function is good.
And the ground. Or the ground is rough, the ground is like fat, this is the sign of refinement; or the ground is rough, the hands are rough, and the nature is fierce. The ground is different, and its nature is also poor.
Then distinguish its softness. Those who are soft, their strength is thick, and they can bear weight; those who are soft, their strength is low, and they can be low. Soft, containing the reason of the sea.
And its cold. Those who are cold, the sex is low, and they can eliminate poison, like ice, and they can retreat. Those who are cold, can be cold and disperse evil, like the warmth of the sun, can be low. The nature of cold, use it with caution.
All things that are rational to their armor are based on the identification of their objects and the importance of using them. Only by clarifying their nature can they be adjusted according to the conditions of the objects, avoid their shortcomings, and use them appropriately.

4 - Those who go to its nail and vegetable are the genus of legume plants, and its chemical properties have several characteristics.
First, it is rich in protein, which is its important characteristic. Legume plant nail and vegetable have a unique protein composition, rich in essential amino acids for the human body, which can provide key nutrients for the human body and help the body grow and repair. Compared with other sources, this kind of protein is easier to digest and absorb, and plays an important role in dietary nutrition.
Second, its carbohydrate properties are also special. Contains an appropriate amount of starch and dietary fiber, starch provides energy for the body, and dietary fiber can promote intestinal peristalsis, maintain intestinal health, and prevent constipation and other diseases. The proportion of the two is appropriate to balance the energy supply and digestion regulation of A and Vegetables.
Furthermore, A and Vegetables contain a variety of minerals and vitamins. Minerals such as calcium, iron, zinc, etc. are necessary for bone development, hematopoietic function and immune regulation; vitamins such as vitamin C, vitamin B, etc., participate in many metabolic processes of the body, and have the effect of antioxidant and maintaining the normal operation of the nervous system.
In addition, A and Vegetables contain special bioactive ingredients. Such as isoflavonoids, which have weak estrogen activity and can regulate human hormone levels, have potential benefits in preventing cardiovascular diseases and relieving menopausal symptoms; there are also some phytochemicals, which have antibacterial and anti-inflammatory properties, help nail vegetables resist diseases and pests, and also benefit human health.
In summary, the chemical properties of nail vegetables are diverse, which are of great significance in the field of human diet and health.

If you want to make four-yang flintlock, there are various methods. The ancient good workmanship, in order to seek this tool, you have worked hard, and you have accumulated years and months to achieve success.
First, choose good materials. You need to choose pure copper, no impurities exist, its quality is firm and dense, so that when smelting, the shape of the tool can be regular and flawless. Gu Yun: "If you want to do good work, you must first sharpen its tool." The quality of the material is related to the success or failure of the yang flintlock, and you must not be careless.
Second, fine smelting. Put the selected copper in a furnace and calcine it with a fierce fire. When the copper melts into a liquid, pour it into the carefully made model. The shape of the fan must fit the rules of the yang flintlock, either round or flat, and the curvature is precise. When pouring the liquid, the action should be steady and fast, so that the copper liquid enters the fan evenly without deflection. When it cools and solidifies, go to the fan and get the yang flintlock body. In this process, the control of the heat is the key. If the fire is fierce, the copper liquid will overboil and bubbles will easily form; if the fire is weak, the copper liquid will be difficult to melt, resulting in uneven texture.
Third, fine grinding. The body is ready, with sand, gravel, suede and other things, carefully polished. First grind the brown surface with coarse stone, remove its burrs, and gradually flatten the surface; then wipe it with fine sand to make it smooth; finally, use soft suede and rub it repeatedly to make the surface of the sun flintel look good. The grinding power is designed to make the sun flintel concentrate light better, and the light can be concentrated at one point before igniting.
Fourth, adjust the curvature. The curvature of the sun flintel is related to the effect of concentrating light. Use the ancient measuring tool to measure the curvature in detail and adjust it slightly. Or try it in sunlight to observe the place where the light is concentrated. If the light is not concentrated, then polish and trim it again, so that the curvature is accurate and the light is gathered correctly.
The process of making four-yang flintlock is complicated, and every step needs to be careful. From the selection of materials to the finished product, all test the craftsman's skills and patience. Only in this way can we make excellent yang flintlock to meet the needs of the ancients to make fire.

If you want to do something good, you must first sharpen your tools. In the storage and transportation of iron, many matters must not be ignored.
When storing, the first priority is to prevent moisture. Iron is easy to rust in contact with water, and rusted iron, its quality is damaged, and it is inconvenient to use. Therefore, the storage place should be dry and ventilated, so as not to allow moisture to invade. If it is placed in the open air, it must be covered with a cloth or the like to prevent rain and dew.
Next time, it is fireproof. Although iron is not flammable, if there is a fire around it, it will harm the fish in the pond, or cause iron damage and deformation. The storage place should be kept away from the source of fire, and fire-extinguishing equipment should be prepared to prevent accidents.
Furthermore, to prevent collisions. Although the iron is strong, it will hit hard, or cause it to deform, which will damage its precision. When stacking, it should be arranged in an orderly manner, not messy, and avoid heavy pressure.
As for transportation, the word steady is the top priority. The road of driving must be smooth, and do not brake or turn sharply to prevent the iron from shifting and colliding. If it is transported for a long time, it is necessary to check it often to ensure stability.
Packaging should not be ignored. It should be packed with tough materials, such as wooden boards, steel belts, etc., so that the iron can be protected from external harm during transportation.
In addition, the carrier for transportation must be selected. According to the amount and shape of iron, choose the right size car and boat to achieve the purpose of efficient transportation.
In summary, the storage and transportation of iron, moisture-proof, fire-proof, anti-collision, stable transportation, good packaging, and suitable vehicles are all related to the integrity of iron, and must be treated with caution and cannot be slack.