Future library

The forehead of first-level star warlock Xiang Xin shone in the sun. She squinted her eyes slightly and still looked down at Cheng Jinzhou. There were more than a dozen scattered materials piled on the square table in front of her, all of which were neat and standard parts.

The hard work of the past few days has paid off, and Cheng Jinzhou has become more and more confident. He walked to the square table with his hands behind his back and said ****ly: "Do you remember how to make an ordinary balance?"

"Of course I know how to do it." Xiang Xin said with a twist at the end of her sentence. She has studied astrology for more than ten years, and making items is one of its categories.

Cheng Jinzhou didn't seem to hear the irony, he snapped his fingers and said, "Make one."

As he said that, he sat on the big chair on one side.

The status of the two seemed to be reversed in an instant. Xiang Xin opened his eyes wide and frowned: "Are you going to regret it now?"

"Can you make a balance with an accuracy of 0.1 grams?" Cheng Jinzhou said with a calm expression: "You don't bother to make an ordinary balance, and you can't make a high-precision one. At this time, if you want to steal the teacher, you have to have To give, make the scale first.”

Xiang Xin's eyes were full of anger, and he let out a heavy "hum". Surprisingly, he didn't resist, and he grabbed the materials on the table and started working. Cheng Jinzhou's previous theory was serious, and she really wanted to take a look. With astrology, even with long eyesight, she can gain a lot. She will not give up such an opportunity - on this point, Cheng Jinzhou is very accurate.

However, it can be seen from Xiang Xintu's expression that he looked like a rabbit being electrocuted. If Cheng Jinzhou fails to produce, the end will be tragic.

Cheng Jinzhou watched carefully from the side. He also wanted to understand the level of craftsmanship in this era.

Xiang Xin first took out a long straight piece of wood, carved a mark on the center, then put it on his hand and swung it left and right until the two sides were balanced. Then he used a knife to remember the center of gravity, and then started inlaying the base. As for the dial pointer, it is also placed on one side like a human accessory.

This production method is basically the same as the handicraft class for elementary school students. It is a slightly more difficult assembly with little technical content. Cheng Jinzhou couldn't help but said: "What should I do if the length and weight of both sides of this piece of wood are different?

Xiang Xin clicked his tongue, his right arm lit up with a faint light, and he saw a pattern appear on the straight wood. The surface seemed to be quickly reduced as if it were etched, and the speed of reduction was not the same on both sides.

"The symmetrical star array is specially used to measure the weight of items." Xiang Xin raised his chin, looked at Cheng Jinzhou with contempt and said, "Most things can be balanced by the symmetrical star array. If ordinary people use a knife to carve it, The method may take ten days."

Cheng Jinzhou marveled at the magical star array and said, "There's quite a lot of waste. Were those wood burned? They look good after being burned."

Xiang Xin was so angry that his bald head was shining. He ignored Cheng Jinzhou and turned around to grab something that looked like a screw and was about to twist it in the middle.

Cheng Jinzhou laughed again.

The first-level star warlock's upper body trembled, and he gritted his teeth and said, "Why are you laughing?"

"Your kind is what I call a tilted balance, which is the most common physical balance. This screw is a center of gravity screw, used to restore the moment balance. But even if it is restored, it should have problems Isn't it necessary?" Cheng Jinzhou pointed at Xiang Xin's semi-finished product, but every word was on point.

The anger on Xiang Xin's face couldn't help but calm down. In the way of mathematics, the master is the teacher - there is no first in literature and no second in mathematics. If you are wrong, you are wrong, and there is no room for sophistry.

Cheng Jinzhou got up to speed at this time and started to give lectures on his behalf, saying: "What we are going to do is a pallet balance. Do you know what is the difference between it and an ordinary physical balance? Knife edge!"

As he spoke, he picked up a quill pen and lightly drew two lines on the straight wood: "When the shape of the pallet balance itself is not a straight line, the problem we just mentioned is naturally solved. And... …”

Xiang Xin's head gently shook up and down in response to Cheng Jinzhou's gestures. When Cheng Jinzhou stopped, he said without even thinking: "Continue!"

Cheng Jinzhou smiled and then said: "There are many ways to make the three edges of the scale not in a straight line, but the essence is the same. To balance the level of its own area, eh, it is very simple."

His tone at this moment was already that of a teacher educating students.

Xiang Xin didn't realize there was a problem and said seriously: "How do you ensure the balance between the two ends?"

"Forget it." Cheng Jinzhou tapped his head with his finger and wrote down the relevant formulas casually: "It is better to use metal instead of wood. There is a problem of center of gravity. The rest is middle school content."

If physical experiments can still be faked, then the equations described in the most rigorous way are almost half-finished truths. The poor young astrologer was dizzy by a string of Greek letters, and his previous pride has long been lost to Guawa Island. Go, she memorized the formula and compared it carefully, and asked modestly: "This seems to be able to take into account the weight of the scale arm itself..."

"That must be considered. You can finish the rest." Cheng Jinzhou was lying on the chair, his legs raised higher than his head, and he had already opened the ring and started to read.

Xiang Xin was completely impressed by the formulas. Beautiful mathematical formulas were sometimes like beautiful scenery, making people intoxicated unconsciously. When doing chores like scales, she had no complaints or regrets. She even placed them left and right by herself, wanting to carefully compare the formulas.

Cheng Jinzhou looked up at the warning surface, and glanced at Xiang Xin's position from time to time. After confirming that she could not see the customer service 010, he was completely immersed in his own world.

When it comes to reaching Star Alliance Level 3, among the rights you get, being able to enter information and store one more book can only be regarded as trivial details. What is really useful is the self-service trading platform.

In the void formed above the ring surface, a screen composed of more than a dozen pieces of information was in a trance, like an extended version of a computer screen, and the words on it made Cheng Jinzhou feel itchy.

"I'm looking to buy black stone at an absolutely high price. The buyer will bear the toll and pay in cash..."

"Looking for a cheap manufacturing method for secondary heterocyclic compounds..."

"Selling third-grade cotton fruit, which can increase the number of fruits that increase life span..."

The second page could not be turned. Cheng Jinzhou stopped with some regret and said, "Can I take all these orders?"

"If you can meet the conditions, yes." Customer Service 010 said casually.

"Then can I announce the news?" Cheng Jinzhou's eyes flashed.

Customer service 010 refused simply: "No."

"Why?" Cheng Jinzhou immediately expressed dissatisfaction.

The customer service was used to his attitude and said lightly: "The cost of posting a task is 100 stars. If you want to place it on an earlier page, the asking price will be higher, plus transportation fees, etc., level 3 stars Alliance members simply cannot afford enough funds, so there is no point in opening up.”

Cheng Jinzhou trembled slightly and said in a trembling voice: "Then if I can issue tasks, can I do any tasks?"

"Autonomous trading platforms are expensive. Of course, you can issue tasks at will." The answer from customer service 010 was very formulaic.

"Then I can also announce it. Looking for Crossing Star Territory, or send me home?" Cheng Jinzhou said with dry lips.

Customer Service 010 was silent for a moment and said: "Theoretically it is possible, but not to mention the cost of traveling through the star field, safety is very difficult to guarantee..."

"Since we can transport different goods in the star field..."

"The higher the intelligence level and cell activity, the higher the travel cost and the greater the risk." Customer Service 010 said, half-jokingly: "With your condition, it may go smoothly."

…

It has indeed reached the first place on the newcomer list. Comrades, it is very strong. Thank you very much.

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