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"The talisman master integrates his own will into the brush and ink, so that the aura of heaven and earth circulates according to the lines of the talisman, achieving various effects.

The reason why Shensha Yunlu was eliminated is because its strokes are single, the lines are simple, and its effect and stability are not as good as those of Fulu. "

He Fanshuang took out a blank talisman paper, and said flatly: "But the talisman also has to pay for it.

The more complicated the lines and patterns of the talisman, the more damage it will do to the carrier—that is, the talisman paper.

A piece of talisman paper usually burns out in less than three quarters of an hour.

Even the cool wind talisman commonly used in restaurants can only be used for twelve hours at most. Then the paper will curl up and become unusable. "

"Well, it's really a waste."

Li Ang nodded his head. Talisman learning is far more costly than sword learning and studying.

Ordinary paper cannot carry the will of the psychic, and it is necessary to use the bark paper of a hundred thousand bark hill specialty trees, or the animal skin paper of sea beasts,

Brushes and inks also have to be mixed with complex minerals, such as fine gold, mountain copper, cinnabar and other powders.

If there is a slight deviation, the effect of the talisman will be greatly reduced.

There is an entire country of Yu in the academy, and all the talisman papers are of the highest quality. But those rural monks who have no background or sect, want to get a piece of high-quality talisman paper, they have to go to the ghost market to buy it, or even make it themselves.

"Shensha Yunlu is different. It has weak restraint on the aura of heaven and earth. If it is engraved on a special solid metal plate, it can reduce wear and tear. It is a talisman that can be used for a long time."

He Fanshuang said indifferently: "If we think of a way to reduce the damage of Yunlu to the metal plate carrier, will it be possible to extend the life of the carrier to five or ten years?

The cost reduction can also benefit the people of Yu State. "

"You want to make the Yunlu board into furniture?"

Li Ang immediately realized that the rich and powerful in Chang'an City would buy a large number of talismans every month, such as freezing and cold talismans for maintaining family ice storage, alarm talismans for preventing thieves, wind talismans for repelling mosquitoes, burning temperature talismans for heating meals, etc. . He did not hesitate to spend hundreds of thousands of guns for this.

This kind of behavior has also become a necessary means for Chang'an dignitaries to maintain their aristocratic appearance.

One day, if he can't spend enough time, he will immediately be considered by the upper class as a poor family, and will be ridiculed by others.

"Um."

He Fanshuang nodded, "A talisman can only be used for three quarters of an hour, while a talisman board can be used normally for several years.

After the cost is reduced, ordinary people can also buy all kinds of rune boards. "

Aura version of washing machine, water heater, electric fan, air conditioner?

Li Ang was stunned for a moment. Originally, he thought that Fanshuang would concentrate on researching how to miniaturize the spiritual machine and make a carriage driven by the spiritual machine, just like the current Neo-Confucian Society. She didn't expect that she would think of home appliances.

However, this seems to be normal. Those who can join the Neo-Confucian Society are often wealthy people with affluent families and leisure time so that they can delve into miscellaneous studies.

But He Fanshuang was different. Before her brother He Siping entered the academy, their family was just ordinary tenant farmers outside Chang'an City. When they were young, the brother and sister had to copy books for the bookstore to earn tuition fees.

Naturally, he will pay more attention to the lives of ordinary people than some Neo Confucian scholars.

"Well, in principle, it should work."

Li Ang thought for a moment, and replied seriously: "But once the talisman board is made, it will automatically absorb spiritual energy from the surroundings, and it is difficult to close.

This will be inconvenient to use. "

Imagine an electric fan or water heater that can never be turned off. The troubles are considered minor. What if the talisman board explodes after long-term use?

"Perhaps it is possible to design the mechanism at the beginning of burning the talisman board."

He Fanshuang said lightly, "For example, if there is a piece missing in the hollowed-out talisman board, you need to move the wrench to put the missing piece in its original position so that the lines can be connected into a straight line.

In this way, when you want to use the talisman board, you can open it at any time. If you want to turn it off, just turn it off.

There is no need to worry about the long-term operation of the talisman board, resulting in scrapping. "

Appliance switch?

Li Ang looked at her again in surprise, and continued to ask: "What about the disturbance of spiritual energy?

Putting multiple talismans together requires a special medium to isolate the interference between each other. For example, the amulet we use.

If multiple talisman boards are used in a family, then these talisman boards will inevitably interfere with each other when they are opened. "

The aura of heaven and earth is like water, everywhere. The two rune boards operating at high power are close to each other, and they are likely to explode and shatter directly.

Just like uranium 235.

"That's something I'm thinking about too."

He Fanshuang put the book on the side of the table, and asked earnestly, "What can you do?"

I am not Doraemon.

Li Ang rubbed his brows, and complained silently in his heart, since the water poisoning disease was solved, people around him seem to regard him as a character who can solve any problem,

Even the newly established railway department of the imperial court felt that he had assisted Dr. Su Feng in inventing the spiritual energy machine, and sent someone to ask for his opinion—although in the end Li Ang still gave some suggestions based on the memory of the foreign world.

For example, the boiler of the Lingqi locomotive needs to be mixed with lead, so that when the temperature of the boiler is too high, the lead will automatically melt and the boiler will be depressurized to avoid explosion;

For example, a switch can be set on the rail to change the track of the aura locomotive;

For example, if the friction of the wheels of the Aura locomotive is not enough to start, you can sprinkle some sand on the track

Li Ang thought about it seriously, and said with uncertainty: "The problem of spiritual energy disturbance has not been solved by all previous talisman masters. Maybe we can change our thinking?"

"Changing your mind?"

He Fanshuang's eyes narrowed subconsciously—maybe because of her experience of copying books as a child, her eye habits are not very good, and her prescription has increased.

"Don't let the talisman board absorb the aura from the heaven and the earth, but set up a cable, and use the cable to transmit the aura."

Li Ang said: "Gold, silver, copper, iron, vegetation, jade and stone, all substances have the concept of aura affinity.

For example, the aura transmission efficiency of stone is one, the aura transmission efficiency of silver is seven, gold is ten, and mithril is twenty."

At that time, Li Ang was judged by Xi Yangyu as a broken sword hexagram, so he couldn't get into the school, so he was forced to find materials by himself, trying to repair the spiritual vein. That's why she was later parasitized by Mosi.

"Perhaps we can make a super-large aura machine to extract aura from heaven and earth. Then use silver or copper wires to transport aura to thousands of households and pour it into the talisman board.

In order to prevent the aura from leaking out, a layer of insulating material that blocks the transmission of aura can be wrapped around the wire. "

Li Ang said: "Call it Yu Guodian. Keke, Yu Guoling Net."