They took black bread and water cups and came to the grass outdoors, and took advantage of the last sunset to eat supper that was hard to swallow.

The town center in this residential area is a little bit quiet, and it looks quite quiet and is far away from the surrounding houses. The closest one is the one that Maduo rented. At first glance, there is only the town under the hillside in the distance.

Compared with the increasingly lively scene in the town, Jiayi and the others are like two worlds.

Quiet, almost resentful.

Trudy came to Jiayi with a sonar detector: "Is this the sonar detector you are planning to sell? How to use it?"

Jiayi let go of the bread and water cup in his hand, grabbed it with his tentacles, and reached out to take the sonar detector in Trudy's hand. Jill looked at Jiayi with a strange expression, a little reluctant to speak, but it was really a strange image in Jiayi's current image - he was holding a large disc in his hand. Because the touch of the mage had no color, it looked like a piece of bread and a glass of water floating beside him, which made people feel very inconsistent.

Although most young mages are not that old-fashioned and often use spells to do convenient things, it is rare for Kazuic to use spells so frequently in life. If it is an ordinary mage, if it is a hand, it is mostly put aside or handed to others. There are few like Kazuic who let his magic tentacles be held by him.

Yancey came over and patted Jill on the shoulder: "Just get used to it."

They are no longer surprised by Jiayi's behavior. Just like what he said, it's good to get used to it. And now he himself thinks that it is indeed very convenient to use magic like this.

The new sonar detector is similar to the original one. It is a plate-sized disc with two concentric circles on the surface, and the inner circle can be turned up like a flip cover. The front end is a bat-like beast head with its mouth wide open and seems to be screaming. This head is just to indicate direction and has no actual effect.

Speaking of which, this thing is very similar to the previous CD Walkman.

Jia Yi lifted the lid of the inner circle backwards, revealing complex runes inside. These runes are not all useful. Many are to confuse the role of the real magic array runes and increase the difficulty of cracking. Although this does not prevent the magic array from being cracked, it raises the threshold for cracking and will not allow ordinary mages to easily crack it.

The lifted lid is slightly concave inside, and there is a protrusion in the middle. This protrusion is used to release ultrasonic waves. The concave lid at the back is used to receive sound, and the chassis below is used to store magic, transmit magic, and develop.

Perhaps because of Jiayi's influence in his previous life, this sonar detector does not look like a magic product, but rather a technological product, with a very simple and beautiful feeling.

Jiayi inputs magic power into the detector to the forest in the distance, and a sound wave that is invisible to the naked eye and inaudible to the ears spreads out in waves. Soon, the image of the forest in the distance is displayed on the plate. I dare not say that it is visible in detail, but it also seems to be in front of me.

Seeing Jiayi's demonstration, the rest of the people surrounded him. Jill looked at the image in the array and said, "There are so many trees, and the contents inside are not clear. Is the detection effect much weaker?"

Jia Yi stretched out his hand and pointed to the trees on the array plate, and saw that the number of trees was eliminated, the gaps became larger, and the inside of the forest became clearer.

"It's good now. You can specify a substance to be eliminated in the array disk display effect. For example, trees, because the sound waves reflected by each substance will be different, and this type of wave can be filtered out. And if something moves quickly, it will be easier to see on the array disk."

In fact, the effect of filtering out a kind of waves that Jiayi mentioned is not as good as expected. For example, Jiayi specifies to filter trees, but can only filter thick trunks, leaves and fine branches, but not filter out. This is to avoid filtering out the dangers, and the filtering range is narrowed, but it is actually because the detector progress is not enough.

Although the magic circle is magical, it is still quite different from modern machinery in terms of fine operation.

The Jiayi detector is still the best in complex terrain because there is no need to be afraid of blocking the view. Although it seems to require very carefulness, otherwise it will be difficult to distinguish too many lines together. However, now it has underwater uses, which can be considered to have expanded the market.

With this new toy, Trudy and the others were intrigued. None of them started to detect them everywhere. When they were helping Jiayi with bread in the underground laboratory, they actually saw the sonar detector being made, but because they had not been successfully made, they couldn't tell what it was.

And it was also a bit taboo to check out the spell props that other mages were making. What if there was something that needed to be kept confidential, so I didn't go over and take a closer look.

There is actually another disadvantage in ultrasonic detection, which is that the wavelength is too short to bypass some larger obstacles, and the detection range is relatively narrow, but these do not affect use at present.

Infrasonic waves are very lethal and are not easily known and are not suitable as a detection method. In fact, this array disk of Jiayi can be transformed into an infrasonic wave emitter, but Jiayi does not have this function and does not promote it as anyone.

Although infrasonic waves are no longer a secret among mages, no mage has opened up spells based on infrasonic waves.

Jiayi also had no idea of ​​transforming the detector into a weapon. Infrasound waves may have miraculous effects when used occasionally for raids, but if you use them too much, it is very simple to prevent them. Whether it is sound absorption or sound insulation, it is very simple.

After dinner, Jiayi and the others came to the underground laboratory again.

The rusks were completely soaked, becoming a pile of sticky and thick.

Mackey looked at these things and felt a little disgusted: "Is this really okay?"

Such a large pool of things really look a bit disgusting. Jiayi himself feels a little unsure, but the final fermentation step is not yet reached, and the result should not be too bad...

Jia first released magic and heated the bucket of bread liquid. After feeling that it was 4 or 50 degrees, he stopped. In order to ensure the effect, he also drew a temporary magic array on the ground to keep the bread liquid in the bucket warm.

Is this good? Trudy was a little confused on the side. It wouldn't be so easy, right?

He looked at Jiayi in confusion. Jiayi clapped his hands, and finally added some gray-brown powder to the bread liquid, saying, "Wait for a while before sealing it for fermentation."

The gray-brown thing added by Jiayi is a substance extracted from malt, which contains a large amount of starch converting enzymes, which are specially used to process the raw materials before brewing, which can hydrolyze the starch into maltose, so that the winemaking efficiency is higher and the flavor is better, especially when brewing ale.

In my previous life, when the Chinese New Year was almost winter, my family would make my own sugar sperm. At that time, Jiayi was very curious, why could malt be turned into malt sugar by boiling it?

At that time, the malt sugar was always boiled at night. In a large pot, under the stove, the pot was heated on low heat. The pot was sprouted wheat, so it was slowly heated on low heat. White foam slowly came out along the pot, which was reluctant to throw away. His mother would scoop out the white foam and let Jiayi drink it himself. It was sweet and light.

Jiayi had never seen maltose officially come out of the pot. Before he slept, the only thing in the pot was malt. At most, the water boiled was a little sweet. By the time Jia came out of the next day, the maltose had been out of the pot and had become diluted. In order to boil maltose, the temperature needed to be controlled. The temperature should not be too high, and the time would last until late at night. At that time, Jia was still young and could not wait for the night, so he had never officially seen maltose really be boiled.

When I got older and my family's conditions improved, I never made sugar sperm by myself again.

Suddenly, when I remembered the things in my previous life, Jiayi felt a little dazed. It had been more than 10 years of time. Some things were slowly left behind, as if they had forgotten them, but suddenly they appeared, like fermented old wine, or as if they had broken into vinegar, and rushed straight into my mind.

He suddenly felt a little guilty and suddenly traveled through time. He didn't know if there was any great god who would help him with the aftermath, nor did he know what kind of blow his parents would be when they suddenly lost a son.
Chapter completed!