The discovery of superparasites gave Todd many new ideas.

　　 If the "keel" parasites are compared to the mechanical skeleton of a fighter armour, then the microbiological phenomenon of "hyperparasitism" allows Todd to install various combat modules on this "mechanical skeleton".

　　For example, the "Honeycomb" parasite can be loaded and applied as a communication module. The mother body of the "Hive" can be buried in the "dragon bones" of the commander; the child body of the "Hive" can be buried in the "dragon bones" of the legionnaires. Since the human nervous system is connected to the neural network of the "Dragon Bone" parasite, during combat, the commander of the Knights will no longer rely on the messenger, drums or flags to convey combat instructions, but directly send the instructions in the brain to The mother of "Honeycomb" in "Dragon Bone" sends commands to the children through the sound waves of the mother.

　　 There are advantages and disadvantages to this way of communicating through the "hive" parasites.

advantage:

　　 1. The operation difficulty is low, which saves a lot of learning costs. Whether it is a war communication method such as commanders, war drums, or banners, commanders and soldiers need to learn and store a lot of knowledge. Moreover, it is not uncommon in history that there have been instances of aircraft delays and even battle failures caused by incorrect communication commands on the battlefield.

　　 2. Ignore the influence of weather, light and other factors on communication. Rain and snow fighting at night was basically a melee without any rules in the Middle Ages. Contact through the "Honeycomb", you can effectively avoid the adverse effects of external factors.

shortcoming:

　　 1. The communication distance is limited. The maximum contact distance of "Honeycomb" sonic vibration is about 50 meters, beyond this distance, the message effect will gradually deteriorate.

　　 2. The death of the commander may cause confusion. Since the communication mechanism of the "Hive" parasite is that one parent corresponds to multiple children, if the commander who owns the parent is unfortunately killed in battle, other people will not be able to replace its location for message transmission.

　　 But in general, the advantages outweigh the disadvantages.

　　 Todd has completed the research on parasites. After processing the experimental materials, he finally breathed a sigh of relief.

　　 went outdoors, he let go of his thoughts, and wanted to take a turn in the town on a whim.

　　 Normally, he chooses to stay in churches and laboratories more often. On the one hand, because of the lack of assistants in the laboratory, he needs to do everything himself; on the other hand, every time he goes outdoors, he is always "watched and followed" by a bunch of people. Over time, he didn't bother to go out again.

　　 Since it was the afternoon and there were few residents in the town, Todd walked and watched along the newly planned street next to the church, and gradually walked into the construction camp of the headquarters of the Knights.

　　 Joe took a few monks and a bunch of craftsmen on the field, starting with the drawings and starting the distance measurement and block division before construction.

　　 Todd's arrival caused a group of people to put aside their affairs and come over to salute.

　　 Todd didn't understand the building construction. He looked at the design drawing in Joe's hand, but he discovered something.

　　 With a sense of superiority as a traverser, Todd asked the monks: "I see the materials on the drawings are mostly masonry and wood. Why not use cement?"

　　 What made him look dumbfounded was that Joe actually replied: "That's not useful."

　　 Todd was a little surprised: "Do you know how to make cement?"

　　 Joe glanced at him strangely: "Of course I know that in the library of the monastery, there is the cement production technology of the ancient Tyro Empire."

　　 (In previous lives, the ancient Roman Empire not only produced cement, but also concrete. The concrete lighthouse they made could even stand for two thousand years. Todd didn’t know it.)

　　 Todd asked hurriedly: "Then why not use it?"

　　 Joe gave the drawing to the other monks, found a piece of wood nearby as a stool, and explained the reason to Todd in detail.

The cement manufacturing technology of the ancient Tyro Empire cannot be used now. The reason is that there is a very important material in ancient Tyro’s cement material-volcanic ash, and it is a special kind of volcanic ash. Only by adding this material, cement It can be hard and durable, and there is no such volcano near Muxi Town.

　　 After explaining this, Joe said that a few years ago, he had tried to replace the volcanic ash with the **** from the smithy. However, the cement after this replacement material was substandard in hardness and durability, and could not be used at all, so he gave up this idea.

　　 After learning the information, Todd left the construction camp of the headquarters of the Knight Order, and started thinking while walking on the road.

　　 There are three kinds of cement in his mind now.

　　 The first type of cement commonly used in modern industry, commonly known as Portland cement (cement), the main chemical composition is calcium silicate (calcium oxide and silicon oxide). When mixed with water, complex physical and chemical reactions occur, which is called hydrate. After the cement is mixed with water, it becomes a plastic cement slurry, until the cement slurry gradually thickens and loses plasticity but does not yet have strength. This process is called coagulation. It then produces significant strength and gradually develops into a hard cement stone. This process is called harden.

　　 The second type is ancient Tyro cement from another world. It is very similar to the ancient Roman cement of the previous life. The main components are quicklime and volcanic ash. Quicklime is calcium oxide, and the component of pozzolan is silicon oxide.

　　 In the third type, the monks used **** instead of volcanic ash for homemade cement.

　　So, why can modern cement and ancient Roman cement be used in construction, but the monks' cement can't be used?

　　 Todd thought for a while, and finally found the reason-temperature.

In the production of modern cement, small and medium-sized factories generally use kilns, medium-sized cement factories generally use rotary kilns, and small-scale cement factories generally use vertical kilns. The temperature in the kiln can generally reach about 1450 degrees Celsius. Such a high temperature can burn cement raw materials. For clinker.

　　 As for ancient Roman cement, the volcano next to the city is a natural furnace. The temperature inside the crater can be as high as 1,800 degrees Celsius. The volcanic ash calcined by it is naturally the best cement clinker.

The monks’ self-made cement is made from the **** of the blacksmith’s shop. Although the main component is also silicon oxide, the furnace temperature is generally only about 900 degrees Celsius due to the limitations of the medieval furnace technology level and fuel supply materials, so naturally it cannot be fired. Qualified cement material.

　　 So how should the furnace temperature be increased?

　　 The kiln used to burn cement in the previous life is not as simple as the "farmer's furnace" used to extract silver. It is assembled from a cylinder, tyre, and silo made of special materials, and has extremely strict requirements for sealing. And the fuel it uses—high-ash pulverized coal—needs to be processed through multiple processes. For those who do not have professional knowledge and relevant experience, wanting to make it is tantamount to fantasy.

　　 But what if you use an ability to increase the furnace temperature?

　　This method is indeed feasible. For example, the alien species of Flame Breath-Leslie, the other party once used his own ability to cooperate with Rachel's "Intentional Power" to create some parts of the printing press. But just the manufacture of three printing presses had already tired Leslie half to death, and within a few days, there was no way to use the "flaming breath" ability.

　　 Therefore, unless the number of alien species reaches a certain scale, it is probably still impractical to rely on the existing "flaming breath" alien species in Muxi Town for large-scale cement production.

　　 Todd, who was thinking about these issues while planning to return to the church, was passing by the "Sisters Hotel" when he suddenly saw Rachel walked out of the hotel with a big basket carrying Karin.

　　 Todd stepped forward, and after the two of them refused, took the initiative to help them carry the basket to the vegetable field behind the hotel.

　　 "What's in it?"

　　Rachel opened the cloth, and the basket was filled with some rotten ingredients. She only heard her say: "Recently, the weather has been sultry and the ingredients in the cellar have broken a lot."

Karin stood beside Todd, helped him hold his arm, tilted his head and said, "A few days ago, Uncle Harkins brought us some ice from the north, but after only a few days, they all melted. NS."

　　 Todd sighed when he heard this. He thought of his "power library"-those petri dishes filled with different kinds of bacteria, and he would spend an hour every two days transplanting them. This is a meticulous and arduous task. If you have a constant temperature ice store in a previous laboratory, you can directly use the bacteria cryopreservation method, which can save a lot of time and energy.

　　 But where is the constant temperature cold storage equipment so easy to manufacture?

To make a biological laboratory freezer that meets the minimum requirements, at the very least requires a digital temperature control device, a finned evaporator, a foam box, an anticorrosive spraying process, etc., in the Middle Ages, I wanted to make this thing. It is estimated that it can only be realized in a dream.

　　 Karin curled her lips and said, "The room has been stuffy and hot these days and nights. Without Pamela, I might not be able to sleep all night."

　　 Todd glanced at the black-haired girl with black eyes and asked, "Pamela? Is that the girl who can use the "Frozen" ability?"

　　 "Yes, at night, her body will emit a slight chill, and it is most comfortable to sleep with her!"

　　 Todd laughed when he heard this, but the first picture in his mind was two girls hugging each other disheveled. The basket was transported to the vegetable field behind the hotel. After saying goodbye to the two nuns, he returned to his experimental building.

　　Sitting on the chair, Todd began to organize today's thoughts in his head, and classified these thoughts on paper.

　　 The first thing I wrote was "cement" and a long series of logical formulas: cement-silica-furnace temperature-kiln or "flaming breath"

Todd wrote here and said to himself: "If you want to make cement, you must raise the furnace temperature; if you want to raise the furnace temperature, there are two ways, one is to make a furnace, and the other is to use I don’t know how to make the kiln, so..."

　　 Todd crossed the term "kiln".

　　 Looking at the remaining "Yan Breath", Todd frowned and folded his hands across his chest.

"Although the "flaming breath" ability can increase the furnace temperature and obtain silicon oxide suitable for cement production, the "flaming breath" alien is only Leslie. He has to rest for a while after using the power. Mass production is completely impossible..." Todd thought of this, put a question mark after "Yan Breath", and said: "Maybe I can inject supernatural bacteria into other people's bodies to create a batch of "Yan Breath." Alien?"

　　 After thinking a little bit, Todd immediately rejected the idea.

　　 If a large-scale alien transformation is carried out, not only will there be social unrest, it will also cause unnecessary troubles. This approach is not feasible, at least not for now.

　　 Todd, who had no idea what to do, could only temporarily give up thinking about cement, and began to write the second word "ice library".

　　 Pamela’s ability is "Frozen", which is divided into two ways: active release and passive release. When a girl actively releases her abilities, she can quickly reduce the temperature around her skin in a short period of time; when she enters a deep sleep, her skin will slowly release cold air, and the space around her can be maintained in a relatively stable low temperature environment.

　　 If Pamela can be kept asleep all the time, then in theory, the cold around her body can transform the room into a constant temperature cold storage. However, it is impossible for a girl to stay asleep all the time. In that case, within a few days, her brain and body will experience hypothermic shock.

　　 Therefore, the method of using "frozen" alien species to create a constant temperature cold storage does not seem to work.

Todd stood up, turned his back in the room a few times, and finally sighed and said: "If I had received more than 50 doctoral degrees before crossing, I knew everything in all walks of life. The all-round talents would be fine; or, let me bring this encyclopedia..."

　　 paced to the back of the laboratory, Todd found a clean floor and sat down, unconsciously looking at the mice wearing the "keel" in the iron cage. After watching it for almost five minutes, he suddenly remembered something.

　　 It is temporarily impossible to transform humans into alien species in large quantities...

　　 What if it’s just to transform an animal into a different species?

　　 What if animals are allowed to carry heterogeneous bacteria with "flaming breath" and "frozen"?

　　 Thinking of this, Todd took out two kinds of supernatural bacteria from the "Ability Library"~lightnovelpub.net~ and started the corresponding research.

　　 First of all, the "inflammation" bacteria are a kind of methanogenic bacteria, which are strictly anaerobic bacteria. Under the microscope, it can be observed that it is a variant of the Methanosarcina colony (Methanosarcina) of the same genus. It exists in the digestive cells of humans and animals, and can decompose and polymerize substances such as H2/CO2, methanol, and trimethylamine to produce a large amount of methane. Compared with those methanogens in the previous life, the methane production and speed of this super-powerful bacteria are surprising.

　　 Todd's specific method is to prepare a glass jar (or iron jar), fill it with culture medium and inject "inflammation" bacteria, and then bury an animal called "tube worm". When the "inflammation" bacteria enter the digestive cells of the tube worm and the tube worm eats the culture medium, a large amount of methane is gradually produced in the tank, which can be used for high-temperature calcination of cement after being collected and purified. (The theoretical combustion temperature of purified methane can reach up to 2860 degrees Celsius, and the actual temperature is about 1700 degrees Celsius)

　　 Regarding the "frozen" bacteria, Todd found a merchant in the town and bought a batch of "Dormmouses" (European Dormouses) from him. A small dose of "frozen" bacteria was injected into these dormouses, turning these little guys into a group of mini "frozen" alien species. Next, divide this batch of dormouses into two batches, one batch is continuously fed to ensure the nutrition in the body, and the other batch is induced to hibernate in low temperature. The hibernating batch of dormouses can turn a closed room into a constant temperature cold storage because of the cold air emitted by the bacteria. After a period of time, the two batches of dormouses are rotated.

　　 Through this method, Todd adopted the method of microbiology to create two extremely special industrial basic "equipment" for the future development of Muxi Town-"bacterial fuel warehouse" and "microbial ice store."