6-pyrrolidin-1-ylpyridine-3-carbaldehyde

"Tiangong Kaiwu" says: "Alum is the master of all alum, and it is used most." Alum, there are many kinds, and alum is particularly important, and its main use is quite extensive.
First, in the dyeing industry, alum is indispensable. In the past, dyeers used alum as a mordant for dyeing. Fabrics are immersed in a solution prepared with alum, and then dyed with pigments, which can make the color adhere more firmly and will not fade for a long time. If dyed blue or red, with the help of alum, the color is fresh and lasting, and the clothes are new and loved by the world.
Second, in the field of medicine, alum is also useful. The ancient healers knew that alum was dry, which had the effect of detoxifying and killing insects, drying up and relieving itching. In case of scabies and itching, alum was often ground into a paste and applied to the affected area to relieve the suffering of the patient. Or when the swelling and poison of the sore first arose, using alum with other medicines, taking it internally and externally, can reduce swelling and dissipate the poison.
Third, in the art of alchemy, alum has a special status. Alchemists use alum as one of the important raw materials and refine it with many gold and stone medicines. It is lively, participates in chemical reactions, and helps the transformation of various substances in the alchemy furnace, in order to refine miraculous pills. Although there may be falsehoods, it can also be seen that alum was indispensable in alchemy activities at that time.
Fourth, in the papermaking process, alum also plays a role. When paper is first formed, it is treated with alum solution, which can improve the performance of paper, make it less susceptible to moisture and mildew, and is conducive to long-term preservation. Therefore, many ancient classics can survive through the vicissitudes of life, and alum also has a credit.

Fuyang flintlock is also a device of ancient times to make fire from the sun. Its quality is mostly copper, like a mirror and concave.
The reason why the sun flintlock can make fire is due to the nature of physics. Sunlight is the heat of the sun, and when it encounters the concave surface of the sun flintlock, it can gather but not disperse. The copper of the sun flintlock has good thermal conductivity and can collect the yang energy of the sun. When the yang energy gathers at one point, the heat gradually rises, and when it encounters flammable things, it can make a fire.
The physical properties of the Fuyang flintlock, first, the material is copper, which has good thermal conductivity and can quickly transfer the yang energy of the sun, so that the heat can be gathered in one place. Second, its shape is concave. This concave surface can make the sun reflect and concentrate on the focus, enhancing the accumulation of yang energy. Third, the surface is smooth, which can benefit the reflection of sunlight, reduce the scattering of light, and make the yang energy more effective.
In the past, the ancestors used the sun flintlock to make fire, and relied on it for sacrifices, cooking and other things. Viewed from the sun flintlock, the ancients in the way of physics, although it is not as detailed as it is today, it can be used according to the nature of things, and it is really extraordinary wisdom. Its method of using copper as the material and concave surface to take the sun is also the germ of optics and heat in later generations. The physical characteristics of the sun flintlock are not only related to the practicality of making fire, but also to the later generations to explore nature and develop science and technology, leaving precious enlightenment.

Those who observe the mercury in Fuyang have a very spiritual nature and change for no reason. However, there are different opinions on whether it is stable or not.
The ancient Fang family warlocks devoted themselves to the art of alchemy and studied the nature of yang mercury deeply. Those who have the stable nature of mercury in Yunyang think that it can keep its quality under normal conditions and is not easy to mutate. When filled with suitable tools and placed in a peaceful environment, yang mercury is like quiet water, with no waves, and its shape and state have not changed significantly.
However, there are also many opinions that contradict it, insisting that the nature of yang mercury is extremely unstable. Because yang mercury is very agile, it is easy to evaporate when heated, and it rises into a gaseous state. And when it encounters many substances, it often reacts wonderfully, or fuses, or causes violent changes. In case of sulfur, the two combine to produce other things, which is not a clear proof of its sexual instability?
Another commentator takes the meaning of compromise. It is thought that whether yang mercury is stable or not depends on the environment and the things it encounters. Under specific conditions, yang mercury can be temporarily secured; however, once the environment changes or comes into contact with other things, its instability will be immediately revealed.
Looking at the books, the records are different. Or it can be used medicinally to cure various diseases when yang mercury is stable in detail; or it can be used to describe its instability, causing danger and causing casualties. Therefore, if you want to clarify the nature of yang mercury, you should not believe it. When you widely accept people's words and study it in detail, you can get its true meaning. Although after many inquiries, whether the nature of yang mercury is stable or not still needs to be further studied in later generations to solve this mystery.

There are various methods for the synthesis of female flies, which are described in detail as follows:
First, take the spiritual energy of heaven and earth, and condense it in fairy grass and spiritual flowers. In the deep mountains and old forests, there are exotic flowers and herbs, which absorb the essence of the sun and the moon, and gather the auspiciousness of heaven and earth. On the night of the full moon, pick its stamen petals and fill them in a net bottle. Then pat the jade pestle into the flower mud, put it in the alchemy furnace, and fry it slowly over a slow fire. When the flower mud is turned into nectar, drip into the spirit dew. This spirit dew needs to be collected at the top of the thousand-year-old trees before sunrise in the morning to have spirituality. The nectar and the spirit dew are integrated, and when it condenses, the embryonic form of the female fly can be obtained.
< Arrange the five elements of gold, wood, water, fire, and earth in the order of each other's birth. First, take a section of peach wood, which has the ability to ward off evil spirits and suppress demons, and carve the shape of a female gadfly on it. Moisten it with clear water, and the water needs to melt a little cinnabar. Cinnabar is the essence of fire and has the power of pure yang. Then cover the woodcut with soil, which needs to be taken from the shade of the mountain, which is rich in yin. Then, place a bronze utensil next to it, which is made of copper and is made of gold, to attract gold qi into it. Finally, use moxa fire to smoke and roast, and the moxa fire is gentle, which can stimulate spiritual energy. In this way, after seven, seven, forty-nine days, the power of the five elements will blend, and the peach female gadfly may be spiritually transformed.
< In the summer and autumn, catch all kinds of insects and choose their healthy ones. Put the insects in a secret box and let them fight and devour each other. This is the way of the weak preying on the strong, in order to extract their essence. If there is only one worm left in the box, this insect will gather the essence of the insects. Take its essence blood and mix it with the silk of the spirit silkworm. The spirit silkworm needs to eat the leaves of the snow lotus in Tianshan Mountain, and the silk spit out is tough and spiritual. Interweave the silk with essence and blood, bless it with a spell, hang it under the Big Dipper, absorb the power of the starlight, and after a hundred days, it may become a female gadfly.

In today's city, the price of sheep is impermanent, due to many reasons. However, according to normal circumstances, male sheep are in the market, and there are also traces of their price.
Looking at the current animal husbandry market conditions, the price of sheep often depends on the breed, age, condition, supply and demand, and where the market is. If it is a common male sheep for meat, and it is less strong and fat, in a place where supply and demand are fair, the price per catty may be between 20 and 30 yuan.
If this male sheep is a good breed, such as Hu sheep, Du Bo sheep, etc., because of the delicious meat quality and fast growth, it is respected by the market, and its price should be higher. The price per catty may be as high as thirty to forty dollars, or even more.
However, age is also a factor. If the male sheep are old, the meat quality is getting coarser, and the growth is sluggish, the price should be reduced. The price per catty may be between fifteen and twenty dollars.
Furthermore, the supply and demand of the city determines the rise and fall of the price. If the season is in season, or the meat market needs to be prosperous, the price of male sheep will rise; if there are many animals and the demand is small, the price will fall.
As for the difference in land, the price is also different. In pastoral areas, where sheep are abundant, the price may be slightly lower; in remote areas, where sheep are few and difficult to transport, the price will be higher.
In general, the price of male sheep in the market often fluctuates from fifteen to forty dollars per catty. However, the market conditions change, and the price is also impermanent. To know the exact price, you need to look at the real-time market conditions.