Crowded through the door was a short, thin old man, with a red face, smooth skin, but a lack of vegetation on his head, and a large piece of it was always exposed, whether it was left or right.

Seeing his image, Cheng Jinzhou couldn't help but laugh out loud.

Mediterranean still smiled and stretched out his hand to pat Cheng Jinzhou twice and said, "My name is Lu Xu, and it is okay to call Lao Lu." ”

His head really needs to be renewed.

Cheng Jinzhou was a little embarrassed, and he also had a good impression of his generosity, and he also smiled and lowered his head to introduce himself: "My name is Cheng Jinzhou, and I am ......."

A basin of cold water poured down his neck, perhaps because he had just reached the freezing point, Cheng Jinzhou even felt that the water had become frozen, and connected himself to his clothes......

Liu Kuang hurriedly held him up, and another star warlock behind him thawed Cheng Jinzhou on his left rib, while Xiang Xin lifted his feet and helped him to the bed.

Lu Xu watched Cheng Jinzhou's upper and lower front teeth tremble, and continued to touch his head with a smile and said, "Don't think you can hold back your laughter, I can hear it." ”

"Old Lu." Liu Kuang glared at him, and then said apologetically to Cheng Jinzhou: "It's me who can't take care of it, Lao Lu is ......."

"It's okay......" Cheng Jinzhou gritted his teeth and could only swallow it in his stomach, this Lu Xu shook his hand is a star technique, and he came together with a fourth-level star warlock, how can he not offend.

The star warlock behind him was Cheng Jinzhou's pulse for a moment, and said softly: "The body is weak and weak, I'm afraid I will have to recuperate for a while." ”

Liu Kuang's eyes suddenly glared at Lu Xu again, and the latter smiled stupidly and said, "Just kidding, how did I know he was so brittle." ”

"He's only 13 years old......" Liu Kuang said in a deep voice: "Apologize to others, you are still the one who came to ask the question,"

"When I was 13 years old, I was strong enough to kill a cow." Lu Xu said as he apologized, his stature was short, and when he said that he killed the cow, the expression on his face was very humorous.

Belly Hei Cheng reluctantly laughed twice, a basin of ice water, it is indeed nothing, he has made more nasty pranks, but this kind of thing is born to himself, it must not be interesting. It's just that the shape is better than people, no matter whether he apologizes or not, he can only endure it with his head down.

"My name is Wang Linghe, and my nickname is Changhe." The third star warlock interrupted Cheng Jinzhou's association, and as he spoke, he floated with his right hand at a distance of more than ten centimeters from his back, and saw a rich steam rising, as if he was making a human meat barbecue.

After about two or three minutes, Wang Linghe withdrew his hand and stood up, and said, "Lu Xu has no heart, and he often doesn't know the severity, so I'm really embarrassed." I will prescribe medicine for you in a while, and you will recuperate at home for half a month, when you can recover as before, you can also replenish your vitality. ”

Cheng Jinzhou didn't want to continue this dull topic, and instead asked, "Your skill is medical astrology?" ”

"There's no such thing as medical astrology." Wang Linghe looked more than 5o years old, his face was slightly pale, and he tapped his slender bamboo pole finger on the table and said, "I can better judge your pulse and the specific function of the star array, forgive me for keeping it a secret." ”

"It's me who asked." Cheng Jinzhou smiled apologetically, felt the cold air on his body gradually subside, and slowly got up from the bed.

Helping him casually, Liu Kuang said slowly: "Actually, I wanted to see you again a few days ago, but I didn't have the time, Xiang Xin asked me a question a few days ago, and after reading it, I couldn't wait any longer." ”

"Oh?"

"I've heard that you've invented a word called Critical Wind?" Lu Xu also hurriedly interjected.

"Calculus, yes." Cheng Jinzhou basically knew the purpose of the three of them.

People like to say that it was Newton who created calculus, but in fact, calculus has also been precipitated and brewed for a long time. Human beings have long been interested in infinity, and Zu Chongzhi's pi was born in countless cuts, but it becomes a long process to form a systematic discipline.

The level of mathematics and physics in the Great Xia Dynasty happened to be at the watershed of the transition from elementary mathematics to advanced mathematics, and some parts of them had already begun to be studied, but in many ways, they only had very preliminary ideas.

As a first-level star warlock, the problem Xiang Xin faced was the problem that the star warlocks of the Great Xia Dynasty generally faced.

Although Cheng Jinzhou has never directly answered advanced mathematical problems, he has shown a kind of mathematical thinking that is very important for real mathematicians, especially those in the transition period, what kind of ideas they use to solve problems. Elementary mathematics has the idea of elementary mathematics, and higher mathematics will naturally form its marketplace of ideas. This is like a primary school student and a high school student, facing the same problem of chickens and rabbits in the same cage, the former must think about the relationship between numbers, while the latter's first reaction should be a binary equation.

Different ideas determine different solutions.

However, it is impossible for Cheng Jinzhou to teach the calculus knowledge he knows to Liu Kuang and others, even if he pays for it. One is that he cannot make a rigorous process of proof and inference, and the other is that this is his greatest strength.

Thinking of this, Cheng Jinzhou asked lightly: "This is just my preliminary idea, not yet, it can't prove to be correct......"

He was also worried that Liu Kuang would continue to ask, and he didn't want the latter to nod noncommittally, so he said seriously: "Cheng Jinzhou, are you interested in serving as an advisor to the Hexi Transit Envoy?" ”

The transfer envoy is the secretariat of the transfer envoy yamen, and the so-called think tank is also, Liu Kuang's question is to invite Cheng Jinzhou to join Liu Bin's field team.

As a fourth-level star warlock, his solemn tone was already an honor.

Cheng Jinzhou was still silent, the Cheng family had a vested interest, and if it wasn't for the problem of face, he would have refused directly. His cheap father-in-law, Comrade Liu Bin, did what he did was purely thankless.

Liu Kuang said in a slightly praising tone: "The construction you have mentioned several times has been of great help to the progress of the project, and you are talented in this regard......"

The seniors appreciate the juniors so much, just like the director promotes the actors, and the boss takes care of the secretary, all for a purpose.

If it was a child who was not deeply involved in the world, he might have really been deceived by Liu Kuang, but Cheng Jinzhou was half lying on the bed peacefully, and said to him: "I don't know how many contribution points you need to get the star array on your body." ”

"I'm a second-level star warlock, and it took 4ooo points to use a level 2 star array." Lu Xu couldn't speak for a long time, he was so anxious that he scratched his ears and cheeks, and it was easy to meet the questions he could answer, and he couldn't remember the pranks of the right talents.

"4ooo is so expensive." Cheng Jinzhou looked at the ring on his hand - Zhou Pao skin is the same Zhou Pao skin, and Yang Bailao has his own seal money.

Lu Xu said triumphantly: "It took me 2o years to change to this star array, and many people are afraid that it will take forty or fifty years." ”

Cheng Jinzhou was stunned. It is quite a terrifying thing for a star warlock to work for 2o years, even if he just robs a thief every day, after 2o years, there is still no problem in buying four or five Cheng families.

Liu Kuang was still waiting to be persuaded again, there was a commotion outside the door, the volume was getting louder and louder, and it was mixed with crying. ”

……

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