7-(3-Aminopyrrolidin-1-Yl)-1-(2,4-Difluorophenyl)-6-Fluoro-4-Oxo-1,4-Dihydro-1,8-Naphthyridine-3-Carboxylic Acid 4-Methylbenzenesulfonate (1:1)

The chemical structure of these utensils is quite unique. The chemical structure of this utensil is the arrangement and combination of the first heavy atoms. The atoms are connected in a delicate order, like soldiers in an array, in an orderly manner. Or they are connected in a chain, like the water of a river, in the same vein; or they are intertwined in a network, like a spider's web, and they are connected to each other. This unique arrangement lays the foundation for its structure and is also related to its many properties.
Second talk about the characteristics of chemical bonds. The strength of the bond is crucial. Strong bonds are like iron locks, which make the atoms closely related and give the utensils a stable quality; weak bonds are like threads, although soft but connected, under specific circumstances, can make the structure change and show a different state. And the types of bonds are diverse, covalent bonds, ionic bonds, etc. have their own energies. Covalent bonds use common electron pairs as bridges to make atoms depend on each other; ionic bonds attract each other with electric charges, forming a situation of yin and yang.
Furthermore, the existence of functional groups adds color to its chemical structure. Functional groups are like smart keys that open the door to specific reactions. Different functional groups have different chemical activities. Or hydrophilic, so that the utensils can be melted with water; or lipophilic, so that they are free in oils and fats. Its location within the structure is also exquisite, or it is at the beginning and end, or in the middle, which affects the reactivity and physical properties of the whole.
And look at its spatial configuration. The distribution of atoms in three-dimensional space is not random. The spatial configuration is not only related to the shape of the object, but also has a profound impact on its interaction with other objects. The appropriate configuration can make the molecules fit together like tenons and tenons, triggering a wonderful reaction. The various characteristics of the chemical structure of this object are intertwined to create its unique properties and functions.

"Tiangong Kaiwu" is a scientific and technological masterpiece written by Song Yingxing in the Ming Dynasty, and its main uses are extremely extensive.
The first is to record the technology of the process. The book contains detailed processes in many production fields, such as agricultural rice and wheat cultivation, sericulture, handicraft ceramic firing, metal smelting, etc. Taking ceramic firing as an example, the various links of soil selection, billet making, glazing, and kiln firing are described in detail, which will preserve precious materials for the inheritance and research of later generations' crafts, so that future generations can clearly understand the exquisite process of ancient crafts, and lay the foundation for the continuation and development of traditional crafts.
The second is to promote the dissemination of technology. At that time, transportation was inconvenient and technical exchanges were limited. "Tiangong Kaiwu" will be scattered in various places to integrate technical systems. Craftsmen and scholars from different regions can read this book to understand the technology of other places and promote the spread of technology across regions. For example, the spread of metal forging technology can enable craftsmen in various places to learn from and improve their own processes, improve production efficiency and product quality.
Furthermore, it helps to utilize resources. The book introduces the characteristics, distribution and utilization of various natural resources. In agriculture, crops are selected according to soil fertility and climate conditions, and planting is rationally planned. In mining, mineral extraction and mineral processing methods are elaborated to help people develop resources scientifically, avoid resource waste and excessive exploitation to a certain extent, and provide ideas for sustainable development.
can also reflect the social economy. By describing the production scale, product types and sales of various industries, it shows the social and economic structure and development level at that time. From this, the relationship between agriculture and handicraft industry, the scope of commodity circulation, and the location of the economic center of gravity can be observed, providing rich materials for the study of the economic history of the Ming Dynasty.
In short, "Tiangong Kaiwu" integrates various uses such as process records, technology dissemination, resource utilization guidance, and economic research materials, and plays an important role in the development of ancient science and technology and society.

Looking at this product, the simplicity of its production process is difficult to break. I have heard that "Tiangong Kaiwu" has a saying: "The silk, hemp, fur, and brown in the world are all of good quality, which makes the unique face and color still exist. I don't believe it when it is said that the creation of things is not laborious." When it comes to all kinds of crafts and creations, they are not achieved overnight, and they really depend on careful construction.
Today's products, the selection of raw materials, or the need to travel through mountains and rivers to find good wood, beautiful stones, and fine materials and concentrates, this is difficult. Like the iron of the sword, it must be pure in texture to become a sharp tool for cutting iron like mud; the silk of brocade also needs to be lustrous and tough in color and fiber to weave a gorgeous brocade.
The raw materials have been obtained, and the processing process is especially laborious. Or it needs to be beaten and calcined, and tempered thousands of times, such as smelting iron into steel, roasted by fire, and struck with a heavy hammer, in order to remove impurities and create toughness; or it needs to be meticulously crafted, such as carving beautiful jade, craftsmen carry knives like pens, according to the texture and depth of color of the stone, meticulously carved, and turn rough jade into a rare treasure.
The assembly process should not be underestimated. The size and shape of the parts are different, and they need to be tightly sewn, just like tenon and mortise, and the slightest difference will cause the loss of the whole. The coordination and cooperation between the various parts is related to the function and quality of the product. If you are not careful, all your previous efforts will be wasted.
However, there are also simple craftsmanship, such as weaving grass as a mat, picking flexible grass, and weaving according to simple techniques. Although there is no complicated process, it also contains the ingenuity and skilled skills of craftsmen.
Therefore, the complexity and simplicity of product production processes vary from thing to thing, and they all embody the craftsman's heart and blood, or complex or simple, all of which are the way to achieve good products and cannot be generalized.

In "Tiangong Kaiwu", if we talk about the competitiveness of an object in the city, we need to look at various elements.
First, look at its quality. Those who are of high quality will easily stand out in the city. Like all the utensils contained in the book, fine-made objects are of excellent texture, durable and beautiful, and can attract the favor of everyone. If the texture is poor, even if the price is low, it will be difficult to win long-term praise, and it will be difficult to win a place in the city.
Second, it depends on its workmanship. Craftsmanship is material. Fine craftsmanship can make the shape and function of objects perfect. For example, the art of silk weaving, the brocade woven by skilled craftsmen, has delicate textures and colorful colors. Compared with those who are shoddy, the judgment is higher and lower.
Third, consider its source. The source of raw materials is also related to its competitiveness. Using rare and high-quality raw materials, the quality of the goods is often better. However, if the raw materials are difficult to obtain, the cost will be high, and the pros and cons need to be weighed. It is also a good policy to use common raw materials and ingenious craftsmanship to create something that is well-known by many people.
Fourth, make the best of the price. The price should be moderate. If the price is too high, although the quality is high and the workmanship is skilled, there may be few people who are interested; if the price is too low, it may damage the quality and reputation. When a reasonable price is set according to factors such as quality, workmanship, and capital, it can fit the market conditions, attract all kinds of buyers, and enhance competitiveness.
Therefore, the competitiveness of a product in the market, quality, workmanship, source, and price are all key. Only when all elements are properly coordinated can they be recognized by everyone and win in the city.

The stability and safety of the product are related to the effectiveness of use and the safety of the user, which is also very important.
Those who are stable are the foundation of the product. If the utensil is unstable, although it has a clever shape, it is difficult to survive for a long time. Looking at the good tools of ancient times, they are all based on solidity. For example, the tripod of the pre-Qin Dynasty was cast in fine copper, and the fan was a good model. Its body is heavy, its structure is strict, and it will not fall after thousands of years. This is a model of stability. The product is stable, so that it can carry the function and is not easily shaken by external forces. It can maintain the normal state and play its effect in various scenarios such as daily consumption and industrial production.
As for safety, it is the bottom line of the product. If there is no safety, even if there is a stable body, it is also a disaster. In the past, there were car builders who did not pay attention to safety, causing drivers and passengers to be in danger. Safety covers many levels, the material is non-toxic and harmless, and does not damage human health; the design has no hidden dangers and does not cause accidental injuries; the operation is stable and reliable, and there is no sudden danger. Like an ancient pavilion, when building, it must consider wind, rain and earthquakes, the selection of materials is sturdy and fireproof, and the layout is reasonable to facilitate evacuation. These are all safety considerations.
To achieve stability and safety, craftsmen need to pay attention and study their skills. Select materials and work really well, review their texture and performance, and choose the best one; the craftsmanship is meticulous, and every strand is not sloppy, so that the parts fit seamlessly. And it must be checked repeatedly with strict regulations and scientific methods, and no defects are allowed. In this way, the product is as stable as a rock, safe and worry-free, so that it can be used by the world, benefit people, avoid worries, and travel freely in the city without trouble.