1,3-Benzothiazole-2-carboxaldehyde

In "Tiangong Kaiwu", the main uses of flax are quite extensive. Its fibers can be woven into cloth and silk. Linen, with a flexible and breathable texture, is particularly suitable for clothing production. The ancients wore flax clothes, which were cool in summer and cold in winter.
In addition, flax seeds are also very useful. It can extract oil, and the squeezed oil is bright in color and has a unique flavor. When eating and cooking, adding flaxseed oil can not only increase the aroma of dishes, but also be beneficial to human health.
And the stems and leaves of flax can be used as feed. Feeding livestock, feeding livestock, nourishing and healthy.
In addition, in the field of medicine, flax also contributes. It is mild in nature and has certain medicinal effects. It can relieve the pain of some diseases. However, use it with caution and follow the doctor's advice.
Therefore, flax has important uses in clothing, food, feeding, medicine and other aspects, and was an indispensable part of the life of the ancients.

Lead and mercury, the Yinghua of hardware, its properties are very different. Lead, dark and heavy in color, heavy and soft in nature, at room temperature, dignified but not flowing, melting in case of fire, like liquid gold pouring, can be molded into various shapes, used for casting and decoration, ancient skilled craftsmen rely on it. And lead has the ability to prevent shielding, which can resist all kinds of rays and protect people from being invisible.
Mercury, commonly known as mercury, is silver-white and shiny, liquid at room temperature, agile and lively, rolling freely, like a snake swimming away. Its nature is extremely cold, and it touches the bone. Mercury is very volatile and can slowly disperse in the air. Although it is invisible and colorless, it is quite toxic and cannot be ignored. If you accidentally touch and eat it by mistake, it will be harmful to the body. However, mercury also has strange uses. Ancient alchemists often used mercury as a medicinal guide to seek the beauty of longevity; and because of its sensitivity to temperature changes, later generations used it as a temperature measuring device, which was very accurate.
Both lead and mercury have their own characteristics. Lead is heavy and stable, and mercury is cold. Lead can condense, and mercury can flow. The prevention of lead and the volatilization of mercury are all characteristics of its physical properties. If used properly, it can be a treasure for the benefit of the world; if used carelessly, it will become a deadly poison. Therefore, if you want to understand the physical properties of lead and mercury, you must explore it in detail, and use it carefully, so as not to be harmed by it, and to gain its long-term benefits.

Mercury, commonly known as mercury, is one of the metals. The genus of lead and mercury, its properties are very different from those of ordinary things.
Among lead and mercury, mercury has various characteristics. Mercury is liquid at room temperature, shining brightly, like a silver flow, which is what distinguishes it from other metals. It is soft and can flow freely without being restricted. Mercury has a high density, which is heavier than ordinary things.
Furthermore, mercury has strong volatility. In the air, it evaporates quietly and is invisible. And mercury vapor is toxic, and if inhaled, it will easily damage the body and cause great harm.
Mercury is chemically active and can react with many substances. In case of sulfur, the two quickly combine to form mercury sulfide, which is a common chemical reaction. Mercury can also form amalgam with metals, which is widely used in many processes.
Mercury had a very important position when alchemy was popular. Alchemists believed that mercury had magical power and could form golden pills, which could be used for longevity. However, they did not know the toxicity of mercury, causing many eaters to suffer from it.
The chemical properties of mercury have both unique physical states and active reaction characteristics. In the field of chemistry, it is an important research object, but its toxicity also needs to be treated with caution.

"Tiangong Kaiwu" has a saying: "Where the mirror is cast, the mold is made of gray sand, and the copper is made of tin, which is also the method of immortality passed down by the ancients." If you want to make armor, there are many methods, so listen to me one by one.
First, the selection of materials is the most important. The quality of armor is related to survival, so you need to choose tough materials. Copper and iron are commonly used, but iron is especially good, because it is strong and tough. When you mine high-quality iron ore, after much tempering, remove its impurities, you can get usable iron. As "Kaogong Ji" says: "In the work of attacking gold, the Zhu family holds the same, the Ye family holds the same, the Fu family is the voice, the Li family is the quantity, the Duan family is the stencil, and the Tao family is the blade." When hammering, it is crucial to grasp the heat. If the fire is fierce, the iron will be brittle, and if the fire is weak, the quality will not be strong. This is subtle, and those who are not experienced cannot do it.
Second, the method of making. First make a mold, use fine clay to shape the armor, dry it in the shade and set it aside. Melt the iron into a liquid, pour it into the mold, and wait for it to cool and form. This process requires attention to the temperature and injection speed of the liquid iron. If there is a slight difference, the armor will be prone to defects. After forming, it is polished and trimmed to make the surface smooth, the corners are rounded, and there are no sharp points, so as not to hurt yourself.
Third, the structure of the armor. In order to make the armor strong and flexible, its structure needs to be carefully designed. It is often connected by small pieces of nail pieces, with leather ropes or iron chains running through. The size and shape of the nail piece need to be determined according to the body part. For example, the shoulders and elbows need to be flexible, and the nail piece should be small; the chest and back need to be protected, and the nail piece should be large and thick. The craftsmanship of the connection should not be ignored, and it must be firm to prevent the nail piece from falling off during battle.
Fourth, post-processing. The armor is made, and it needs to be treated with rust prevention. You can use grease to smear the surface of the armor to isolate air and moisture and slow down the rate of rust. There are also special potions soaked to form a protective film on the surface of the armor to enhance its durability.
Armor production is complicated, and every step is related to its quality and protective performance. Only by following the ancient methods and making it with care can you become a good armor to protect soldiers on the battlefield.

If you want to discuss the precautions of the beetle in storage and transportation, you should pay attention to all things. First of all, the beetle is good to hide in a dark, wet and warm place, so the storage place must be dry, ventilated and cool. In the warehouse, windows can be set up to pass the natural wind, or ventilation devices can be placed to make the air fresh. And it is appropriate to control its humidity. Moisture-absorbing things can be used, such as lime, charcoal, etc., to keep the environment dry and make the beetle difficult to store.
Second, the beetle is prone to all things, and before storage, it is necessary to check all things carefully to remove those that have been stained. During transportation, the contents should also be carefully inspected, and the beetle should not be mixed in. If you see any signs of beetles, dispose of them immediately, discard them, or use fumigation to remove the beetles.
In addition, beetles can migrate by means of objects, and the packaging of things for storage and transportation is also necessary. When using solid and seamless packaging, prevent beetles from burrowing in. And the packaged things must also be clean and free of beetle eggs and larvae. During transportation, do not leave the things in the open air for a long time, so as not to take advantage of the beetles.
In addition, it is necessary to patrol them from time to time. At the storage place, regularly inspect and observe the shape of the things. If there is a sign of beetles, take countermeasures quickly. During transportation, it is also advisable to check in time and get early treatment.
For the prevention of beetles, during storage and transportation, attention must be paid to the environment, inspection, packaging and inspection of objects, so as to ensure the safety of objects and avoid the harm of beetles.