The sea animal is also a sea beast, and its use is quite extensive. In the era described in "Tiangong Kaiwu", there are many impressive things.
First, the skin of the sea serpent is exceptionally tough and can be used as armor. The armor made of the sea serpent skin is light and strong, and the protection is quite good. The ancient soldiers wore this armor on the battle formation, which could resist swords, guns and arrows, protect themselves and increase the chance of victory. In the world of cold weapons, this armor is a sharp weapon in the army, which is related to the lives of the soldiers and the victory or defeat of the war, so it is important for soldiers.
Second, the bones of the sea serpent can be used as medicinal materials. Its nature is warm, sweet and salty, and it has the effect of promoting blood circulation and removing blood stasis, strengthening tendons and bones. Doctors use it as medicine to treat injuries and bone diseases. Under the medical conditions at that time, the medicinal use of the sea serpent's bones brought good news to many patients, relieved their pain, and helped them recover. It was very important for folk medicine.
Third, the scales of the sea serpent's dragon are dazzling and can be used for decoration. Wealthy families often take their scales and decorate them on utensils and palaces to show luxury and wealth. For example, in the screens, beams, or women's jewelry of the mansion, the figure of the sea serpent's scales can be seen, which increases its beauty and shows its dignity. In the social fashion of the time, it is a symbol of status.
Fourth, the power of the sea serpent is infinite, and it is also available for water transportation labor. On the rivers, lakes and seas, the boat can save manpower and increase the speed. At that time, the water transportation was prosperous, and the transportation of goods and personnel depended on the boat. The help of the sea serpent made the water transportation more convenient and efficient, and it played a significant role in economic exchanges and social exchanges.

Boronide is also the source of energy. Its physical properties are specific and important in many fields.
Boronide is often in the shape of a white to off-white fine powder, which is scattered on the ground and easy to flow. Its melting temperature is 400 ° C. Under this temperature, boride can maintain its stability. However, its quality is limited. If it is affected by the temperature, it is easy to decompose and produce materials such as water, so it must be preserved to avoid high environmental conditions.
Boron has good solubility in water, and it is easy to dissolve in water. This reaction is strong and quickly produces a large amount of water. This property determines that it is stored in use and prevents water from being connected. In the solution of water, such as ether, tetrafuran, etc., boronide also has a certain solubility, which makes it widely used in the field of chemical synthesis.
Its density is 1.074 g/cm ³, and the phase density is small, so it is necessary to pay attention to its characteristics in operation to prevent loss. In addition, boronide has absorbency. If exposed to moisture and air, it will absorb water, which will affect its chemical activity. It is sealed and stored in dry conditions.
The color of boronide is usually white, but if it contains white, it may be slightly gray and other colors. The transformation of this color can also be judged as one of its degrees. Therefore, knowing the physical properties of boration is essential for proper use, storage, and maximum effectiveness.

Silver halide is a type of halide containing silver, which is unique in chemical properties. It is easy to decompose when seen in light, which is one of the remarkable characteristics. In photography in the past, silver halide was very useful due to this characteristic. When light is projected on a film coated with silver halide, the silver halide is then decomposed due to light action, forming a latent image, and then through various processes such as development and fixing, the image will be clearly presented.
The solubility of silver halide is also considerable. In common silver halide, silver fluoride is soluble in water, while silver chloride, silver bromide and silver iodide are insoluble. And the solubility of these three decreases in sequence. This difference is due to the different forces between halogen ions and silver ions. Silver chloride is a white precipitate, silver bromide is a light yellow precipitate, and silver iodide is a yellow precipitate. This color change is also related to ionic polarization. With the increase of the radius of halogen ions, the ionic polarization increases, resulting in a darker color of silver halide.
Furthermore, silver halide has certain oxidation properties. Under certain conditions, silver halide can react with a reducing agent, and the electrons obtained by silver ions are reduced to silver elemental matter. For example, in some chemical reaction systems, by adding an appropriate reducing agent, silver halide can be reduced to precipitate silver particles.
Silver halide is widely used in many fields. In addition to photography, silver halide plays an important role in the preparation of special optical materials, photosensitive materials and some catalytic reactions. Due to its chemical properties such as photodecomposition, solubility and oxidation, the unique uses of silver halide in different fields are determined, which is actually quite unique among chemical substances and has important practical value.

To make a 1-hydrochloric acid dog, the methods are as follows:
First, the essence of hardware. Choose high-quality red copper, calcined with charcoal fire, melt it into juice, pour it into a special mold, into the shape of a dog. Then take sulfur and saltpeter, mix it around the copper dog in a certain proportion, ignite it, and make it go through the fire refining. After that, dilute hydrochloric acid is slowly poured on it, and after seventy-seven or forty-nine days, there is a small success. You need to pay attention to the grasp of the heat. If the fire is fierce, the copper dog will be destroyed, and if the fire is weak, it will not work.
Second, use the spirit of grass and trees. Look for the thousand-year-old ginseng in the mountains and old forests, supplemented by fairy herbs such as Ganoderma lucidum and Polygonum multiflorum. Mash all the medicines, put them in Catch another puppy and feed it with the concoction for a hundred days, so that the essence of grass and trees can be integrated into its body. After taking the dog's blood, reconciling it with an appropriate amount of hydrochloric acid, and placing it in a cool place for seven, seven, forty-nine days, until it solidifies, it is the beginning of the 1-hydrochloric acid dog. However, in this process, the ratio of medicine must be accurate, otherwise all efforts will be in vain.
Third, gather the strange energy of heaven and earth. Choose a feng shui treasure land and set up an altar on the night of the full moon. Place the puppy in the altar and surround it with a charm. The caster needs to hold a peach wood sword and chant words in his mouth to attract the spiritual energy between heaven and earth to gather on the puppy. At the same time, use a special utensil to collect morning dew and moonlight essence, mix it with a little hydrochloric acid, In such a hundred days, the dog's body will undergo strange changes and gradually become a 1-hydrochloric acid dog. However, this technique requires extremely high skills of the caster, and if you are not careful, you will be attacked by heaven and earth.
All these numbers are passed down from ancient methods, but the process is complicated and dangerous, so you need to be careful.

It is necessary to be careful about all the things that the halogen turtle hides and transports.
When hiding, you must choose a good place. The ground should be dry and sheltered from the wind, so that the halogen turtle is not invaded by moisture. Wet is perishable and damages its nature. It is also necessary to prevent the disturbance of rats and insects. Rats like to bite, and insects can also eat. If the halogen turtle is affected by this, it may be difficult to complete its form.
When transporting, wrap it around. Wrap it with something tough, so that it will not be shaken and bumped. The halogen turtle is brittle, and if it is a little careless, it may be broken. The person who carries it should also be cautious, and should not act recklessly.
Furthermore, it is necessary to avoid heat in Tibet and transportation. Halogen-alkali turtles are afraid of high temperature, and under high temperature, they may be caused to melt and lose their original state. And where they are transported, the air should be circulated and not blocked, otherwise they are prone to odor and are also harmful to halogen-alkali turtles.
When they are transported in Tibet, they should also be checked frequently. Check if there is any change, and if there is any abnormality, find a way to deal with it quickly. In this way, the halogen-retaining turtle is safe and intact in Tibet and transportation, without losing its usefulness.