5 Bromo 2 Iodoanisole

According to the records in "Tiangong Kaiwu", arsenic (that is, letter stone) is the descendant of tin. Its main uses are two.
First, it is used in medicine. A small amount of arsenic can be used as a blind medicine in ancient medicine, fighting poison with poison. In the treatment of certain diseases, such as scabies, malaria, etc., doctors will use arsenic cautiously. Although arsenic is highly toxic, it can play a strange effect on specific diseases and help the human body recover health after being reasonably processed and compatible.
Second, it is used in the field of agriculture. In ancient agricultural pest control, arsenic can be used cleverly. Due to its severe toxicity, arsenic can be sprinkled in specific areas of farmland to avoid pests or directly kill them, thus protecting crops from pests and ensuring crop yield. However, extreme care should be taken when applying it to prevent excessive damage to the soil and crops, affecting the cultivation and crop growth in the coming year.
It is necessary to understand that arsenic is highly toxic. Whether it is used in medicine or agriculture, it needs to be carefully operated by professionals. A little carelessness can endanger lives and damage the environment.

Mercury is a highly toxic substance, and lead is also a harmful substance. Mercury, commonly known as mercury, is liquid at room temperature and volatile, and its vapors and compounds are toxic. The physical properties of mercury are quite unique. The melting point is -38.87 ° C, the boiling point is 356.6 ° C, and the density is relatively high, about 13.59 grams/cubic centimeter. The color is silvery white and the fluidity is good.
Lead is a heavy metal, soft in nature, with a newly cut metallic luster on the surface. However, it is easy to oxidize in the air, gradually forming a layer of dark gray oxide. The melting point of lead is 327.5 ° C, the boiling point is 1740 ° C, and the density is about 11.34 grams/cubic centimeter.
Both of them were occasionally used in some fields in ancient times, but their toxicity was long recognized by the world. Mercury has been used in alchemy and other alchemy techniques, but long-term exposure or accidental ingestion can cause damage to multiple systems in the human body, such as the nervous system, digestive system, etc., causing tremors, mental abnormalities, oral inflammation and other diseases. Lead can also cause many harm to the human body, especially affecting the nervous system and blood system, which can cause mental retardation in children, anemia in adults, abdominal pain, etc. Although the ancients knew or were not as good as today's people, they also knew that these two should not be ignored, and when using them, they were more cautious.

Mercury is a highly toxic substance, and realgar is also a toxic medicine. The synthesis of the two needs to be cautious. Under today's scientific understanding, this kind of synthesis has many risks and is harmful to health. However, the ancients have explored related methods. The following are the methods of synthesis.
Ancient alchemists used the technique of Danding to synthesize mercury and realgar. To combine mercury and realgar, first prepare a sturdy ceramic tripod. The tripod needs to be calcined over heat and has a dense texture to prevent leakage. The selected realgar is ground into fine powder and placed at the bottom of the tripod. The fine powder needs to be uniform and not lumpy. After taking pure mercury, slowly pour it on the realgar powder, and the mercury is warm and flowing, covering it.
The mouth of the tripod is tightly sealed to prevent the synthetic material from escaping. For the sealing material, take more yellow mud and beat it repeatedly to make it more viscous. Apply it to the gap of the tripod mouth, about a few points thick, and wipe it evenly without omission.
Then, place the tripod on the stove and burn it slowly with a warm fire. The control of the heat is extremely critical. If the fire is large, the mercury will evaporate easily, and if the fire is small, it will be difficult to synthesize. At the beginning, a small fire will dry slowly, so that the temperature in the tripod will slowly rise. When the wall of the tripod is slightly hot, it will gradually add fire to maintain a constant temperature. In this way, after several days or even dozens of days, always pay attention to the change of the heat, and there must be no s
When the heat is enough, remove the tripod from the stove and wait for it to cool. Carefully open the lid of the tripod, there may be synthetic substances in it, or solids with different colors, or substances with unique properties. This synthetic substance may have been regarded as a miraculous elixir by the ancients, but according to today's scientific view, its toxicity still exists, and it must not be taken at will. And this kind of synthesis process is very dangerous, and the volatilization of mercury can cause poisoning. Non-professional conditions and protection must not be tried.

The method of mining gold is mostly due to the foothills of mountains and rivers, where there is sand, and there is gold under it. However, in the storage and transportation of gold, all things must be cautious.
When storing, the first choice is to choose a place. When looking for a high and dry place, avoid a humid place, to prevent gold from rusting and rotting due to moisture. And it is necessary to build a sturdy warehouse, with multiple precautions, so that thieves cannot covet it. The warehouse has shelves in the middle, which are classified and hidden. The size and color of gold belong to their respective positions, so that they can be checked and inspected, so as not to be confused.
As for transportation, its risk is particularly serious. The escort is elected as a loyal and brave person, familiar with the geography of the route, and has high martial arts to prevent bandits from robbing and robbing on the way. Before setting out, plan the route carefully, avoid remote and dangerous places, and take more avenues. However, on the avenue, you should not take it lightly, and you must always be on guard. When transporting, the gold should be properly wrapped, placed in a sturdy box, and reinforced with iron hoops to prevent bumping and damage. And do not expose the transportation information, keep your whereabouts secret, and do not let outsiders know the itinerary. Take a break on the way, and also choose safe and reliable post stations and inns, and send people to patrol and guard around. When encountering suspicious people, be vigilant immediately and take strict precautions.
And gold is precious, and every move is of great significance. Storage and transportation, a slight difference, will cause huge damage. Therefore, all things should be carefully planned and acted cautiously in order to ensure the safety of the money and to avoid the risk of storage and transportation.

In the city of Guanfu, the price of corn is related to the foundation of people's livelihood, and it also involves the interests of merchants, so everyone is eager to observe it.
In the past, the price of corn was always changing with the time of day, the location, and the people. In the weather, wind, rain, frost, hail, it is related to the abundance of the harvest. If the weather is good, the harvest will be prosperous, and the harvest will be promising. The amount of corn in the city is sufficient, and its price will be stable and flat. Suppose the drought is bad, or the waterlogging becomes a disaster, the crop is damaged, the harvest will drop sharply, and the corn in the city is thin, the price will rise.
Those who are in a good location also have different production places. Where the land is fertile and the water source is convenient, the yield of corn is abundant and of high quality, and it is transported to the city, and the price is often moderate. In remote places, the production is not easy, and the transfer is difficult, the price may be slightly higher.
As for people and people, the strategies of merchants and the measures of government orders are all among them. If merchants hoard up, the price will easily change; the government's decree will reward farmers and reduce prices, and it will also make the price stable.
And cities in the four corners of the country have different conditions. In prosperous cities, the demand is huge, and the price may be slightly high; in rural areas, the supply and demand are slightly slower, and the price is slightly lower. However, they are not fixed, and often change according to the year and season.
At this moment, the market is changing, information is smooth, and price changes are still in accordance with the old rules, but the reaction is faster. Everyone must carefully observe the price of corn, so as to respond to changes in time, seek profits and avoid harm, ensure the safety of livelihood, and promote the prosperity of the market.