The gifts of Baqing are specially selected, and they are always divided into several blocks and placed in a conspicuous place. Looking at the rise and fall of a family, you can get a glimpse of one or two from the children's uprooting.

The Cheng family is also a strong party in the southwest, but it is not comparable to the magnanimity of the nobles in the capital, and the four items listed in the longhouse are just a colored inkstone, a "Four Classics Translation Commentary", a bottle of openwork white jade lion, and a new yellow glaze black color bamboo pattern bottle.

The color inkstone is expensive in the material, but the front is a very ordinary landscape relief drawing. "Commentary on the Translation of the Four Classics" is a very good engraving, speaking of which, it is better than most of the books that Cheng Jinzhou has seen in modern times, if it is properly preserved, there is no problem with putting it for one or two hundred years, but unfortunately the current one is new.

As for the jade lion bamboo pattern bottle, it is not a rare commodity. Four things, no matter which one is proposed to sell, if you are not in a hurry, it can be about a hundred and fifty taels, but in a pawn shop, it is good to have 1oo taels of silver.

1oo taels of silver, not very good slope land, you can also buy four or five acres, that is, all the property of small households, but unfortunately it fell into the hands of Cheng Jinzhou, just look at 120,000 words.

Cheng Jinzhou looked around a little unwillingly.

Just when he was unable to decide, a voice suddenly sounded in his ears: "I am ...... Wuzong"

"Huh?" Cheng Jinzhou Xun looked to both sides, but there was no one around.

Wu Zong seemed to anticipate Cheng Jinzhou's movements, and said in a low voice: "I'm still outside, I want to tell you, among the gifts of Baqing, there is a gift from a star warlock, which should be the most suitable for you." It's up to you. ”

After saying that, there was no sound.

The Star Warlock still has a lot of things in his hands that are more interesting than technology.

"Transmission into the secret, or thousands of miles of sound transmission or something, it should be a matter of sound wave frequency." Cheng Jinzhou gritted his teeth enviously, knowing that it was not so simple, but he still evaluated irresponsibly, inside and outside his body, and he couldn't see the slightest bit of scientific spirit.

Cheng Jinzhou muttered the word "chance" on his lips, and unconsciously thought that he was very happy to say it from the mouth of the star warlock.

The four things in the middle of the longhouse obviously could not have been given by the Star Warlock, Cheng Jinzhou moved his steps and walked around to both sides. Even if it was just out of curiosity, he wanted to see what the Star Warlock was sending him.

In a dark tone, his so-called star warlock must be a star star warlock. With such a character and the things that are sent, there are few things that the Cheng family does not include in the library, and Cheng Jinzhou doesn't want to waste the opportunity.

If you think about it, maybe it's one of the two star sorcerers you saw during the sacrifice.

In the rich family, 1oo taels of silver are common, but star warlocks are not common.

The items in the longhouse were roughly placed in a circle, and Cheng Jinzhou walked around from left to right, constantly filtering the items he saw in his mind.

Gold and silver artifacts are not, ceramic carvings are not, and rare books and paintings are not like them, Cheng Jinzhou flipped through them, and his steps suddenly stopped.

A handful of scales?

Cheng Jinzhou wiped his eyebrows with his right hand, not sure if the star warlocks of this era would use such a general tool.

In the early days of science, astrophysics, mathematics, chemistry, and even biology were not separated, and it is not surprising that Darwin's naturalist came from here, a long-lived astrowizard with a variety of hobbies.

Cheng Jinzhou carefully took the balance off the cabinet that looked like a bookshelf, and at the same time, there were small boxes tied together.

This balance is obviously deliberately exposed.

The box is a simple buckle iron box, but it is strangely connected to the scale, the edge of the base is attached to the iron buckle, Cheng Jinzhou tried to open it in a normal way, and then failed shamelessly.

"It's not going to be a puzzle too." Cheng Jinzhou looked at the outer ring of the box with a muttering to himself, anyway, it was Cheng Jinhao who was waiting outside, and he wanted to make the other party more anxious.

The pallet balance is similar to that used by Cheng Jinzhou in his previous life, and the standard accuracy error - o.1 gram is engraved in the center. With Cheng Jinzhou's experience for more than a month, the starman's markings are basically the same as the world they are familiar with, and the common weights and measures also save a lot of trouble.

The base of the balance is a rectangle, which is not commonly used, with a weight locket attached on one side and engraved numbers on the other, 3 and 4, with a downward symbol in the center.

Above the symbol is the center of the dial of the scale.

Cheng Jinzhou pouted and said, "The puzzle of the star warlock." ”

……

If you see a rectangle and the numbers 3 and 4, what is the first thing that comes to mind?

Some people may naturally answer, "5." ”

Mathematicians will naturally reply, "5." ”

But their reasons are definitely different.

In the eyes of ordinary people, 3, 4, 5 are very normal natural sequences, and it makes no difference at all whether to get the answer "5" or the answer "2".

But to mathematicians, 3, 4, 5 are a strange and wonderful string of numbers - because it is the simplest Pythagorean number in mathematics, and it is the first step of the Pythagorean theorem: the square of 3 plus the square of 4 equals the square of 5. A rectangle, 3 in width and 4 in length, must be 5 diagonally long!

This mysterious conclusion, which is called the Pythagorean theorem in the West and the Pythagorean theorem in the East, is the beginning of human mathematics, and it can even be said that it is the first step of human mathematics.

And the three Pythagorean numbers of 3, 4, and 5 also have almost god-like magic. Its next set of Pythagorean numbers, whether it's 5, 12, 13, or better looking 6, 8, 1o, lacks the brilliance from the start. It is also more difficult to be seen and understood, and there is no doubt that if the first set of Pythagorean numbers were not so simple and dazzling that they were dazzling, the footprint of human civilization could have been delayed for another 2oo years or 2ooo years.

The status of the Pythagorean theorem is also reflected in the "Geometric Original", and Mr. Ou Lao also stands on the shoulders of Greek giants, among whom there is a giant, called Pythagoras.

In the eyes of Cheng Jinzhou, who has been re-studying "Geometric Original" all day, the star warlock, Tai Ban, is linked to mathematics and physics. He delicately opened the weight box attached to the balance and picked out two little ones marked 5.

First put a weight in the right tray, look at the iron buckle, it is still deadlocked, and then put the second weight on the left tray, the bottom line of the rectangle, without warning, pop out two wires.

One appears in the position of the diagonal, and one in the middle of the rectangle.

At this time, Cheng Jinzhou didn't know what was going on—no matter how simple the primary mechanical lock—he immediately stretched out two fingers and rudely abused the wire on the diagonal.

Rubbing, twisting, pressing, and pulling, I don't know which step, the strong iron buckle "snapped" and bounced open.

Cheng Jinzhou grinned twice and looked around with contempt. Not a single one.

Inside the box is a ruler engraved with degrees, a compass without a point, and a small nine-palace abacus - a typical astrowizard's calculation bag, most astrosorcerers use these utensils to calculate numerical directions and manipulate the star arrays engraved on their bodies.

No wonder Wu Zong let himself take it. This is really the most valuable thing in the room, and if you add the complicated "unlocking ceremony", it seems to have some special meaning.

didn't want to go out too early, Cheng Jinzhou took out the things in the calculation bag one by one, put them on the table in the middle of the longhouse, and looked at them carefully.

Of the 4 things, the pallet balance naturally has the highest value.

Cheng Jinzhou felt that this might be the balance with the highest precision in the entire Great Xia Dynasty.

Under the modern real room standard, the normal tray balance can have an accuracy of o.1 gram, which is considered good, if it is often used and not well maintained, there is no need to express surprise if there is an error of o.5 grams or even 1 gram.

In Cheng Jinzhou's previous life, he did not know how many scales he had ravaged with his own hands, the weights were not accurate, or the yards were not smooth, so he threw them directly to the public real room, and then took another pair, anyway, for real funds, a few sets of balances are nothing at all.

However, under the conditions of the Great Xia Dynasty, there are only two ways to get products with good accuracy - exceptionally good craftsmen, or star warlocks who have mastered certain skills, and the price of both is not cheap.

The more backward the era, the more expensive the high-precision products are.

In many cases, due to limited production volume, high-precision products are even more priceless.

Whether it is a practical production of chemicals or a small-scale production, the average is indispensable. Even without the temptation of a star warlock, Cheng Jinzhou would like to get this set of gadgets.

The accuracy of the ruler and compass is also very good. In the Great Xia Dynasty, a standard ruler with an error of less than 5% and a scale could be sold for more than 2o taels of silver, and there were only a lot more compasses and balances, not to mention the Nine Palaces abacus. Its production is far more complicated than an abacus.

I don't know which star warlock gave me a strange gift.

Cheng Jinzhou couldn't help but fantasize about the lives of the star warlocks.

In such a backward era, the life of the star warlocks may be the closest to what modern people are used to, but even with the wealth of the Cheng family, it is difficult for their children to get the guidance of genuine star warlocks.

And the astrosorcerer who has no one to guide him is at best just a waste of money and amusement himself.

Seeing that it had taken more than an hour and had enough of playing, Cheng Jinzhou put the device back into the box, closed the iron buckle, and hugged it vigorously.

This small box may be able to make him different from other children in the family. Cheng Jinzhou secretly thought to himself that even the children of the Cheng family who could fly when he met him in the school field after school that day were just spending a lot of money to buy a set of star arrays.

The star arrays used by true sorcerers are orders of magnitude higher in practical terms.

"It's up to you to see if you can give another set of Ox Star Arrays." Cheng Jinzhou rubbed the box and walked out.

Outside the long house, the father and son of "Benevolence and Charity" had been waiting impatiently, and the young Cheng Jinhao glared at Cheng Jinzhou unabashedly, and walked in.

As for Cheng Bingshi, he looked at the balance in Cheng Jinzhou's hand, his face was half red and half white, and he looked overworked. He tried his best, what he wanted was nothing more than this set of equipment, and watching Cheng Jinzhou take it away, it was impossible to do it after all.

Cheng Jinzhou's eyes rolled quickly, and he looked around.

At this moment, the task is to meet a certain great star warlock who has left a secret.

However, the Star Warlock has not appeared for a long time.

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