Fang Youcai obviously had no way to take this person, so he came to Zhao Youju and said, "Da Lang, this Xiao Xiu is from the neighboring village and wants to see our mill." ”

The matter of the Zhao family's mill, because of the dispute with Luo Village, has been known to everyone in the left and near.

Hearing Fang Youcai say this, that Xiao Xiucai said "Huh": "It turns out that this little brother is the young master of Yuzhang Villa, I heard that your family has Tianzhu's arithmetic, I don't know if you can point me out?" ”

Zhao Heju was stunned when he heard this, since Fang Youcai called this person Xiao Xiucai, then he must be a scholar, not to mention that as a reader, he is so rude to speak, how can he be interested in Tianzhu arithmetic?

"I don't take advantage of you, if you teach me Tianzhu arithmetic, I will teach you...... Teach you ......" Xiao Xiucai thought for a long time, looked at Zhao Youju again, and said with some annoyance: "I can teach you, you can't learn it, I'll make you a fun kite, or...... Yes, after the end of the year, it will be the New Year's Eve, how about I make you a big Kong Ming lantern with my own hands? ”

He was babbling on his own, but what he said made Zhao Heju's eyes light up. In the Great Song Dynasty, there are many people who read everywhere, but there are not many people who can make kites and big Kong Ming lanterns.

"You don't need to make the kite Kong Ming lantern." Zhao Youju raised his chin: "I have the drawings of the new Kong Ming lantern." ”

"A new Kong Ming lantern?" Xiao Xiucai listened and threw the Tianzhu arithmetic method out of the clouds, and when he came up, he wanted to take away the blank paper in Zhao Heju's hand. Zhao Ziyue stretched out his hand to stop him, and he was still unaware of his own deceitfulness: "Show me, just take a look, I want to see what the new Kong Ming lantern is!" ”

Zhao Heju motioned to Zhao Ziyu to let him go, and Xiao Xiucai took the drawings from Zhao Youju's hand and looked at them, and then laughed and said, "What's so new about this...... Hey? ”

His laughter was interrupted only halfway, and then he looked at Zhao Youju suspiciously: "What kind of brush is used for the painting on this paper?" ”

Zhao Youju smiled and took out a pen rolled in a paper tube: "This pen." ”

This is Zhao Youju's self-made pen, the refill is made of a mixture of extremely fine toner and clay, and the body of the pen is rolled tightly with thick paper outside the refill, although the handwriting is not as clear as the pencils made of graphite in later generations, but it is barely usable. However, this is extremely troublesome to make, and the handwriting is not very clear, Zhao and Ju are only used to draw pictures, and they still use a quill pen to dip ink directly when writing.

"What is this made of?" Xiao Xiucai took the pen from Zhao Heju's hand again, took out the booklet from his arms to write and draw, and shook his head while writing: "It's not easy to use, it's extremely difficult to use!" ”

Seeing him grasp the pencil with the posture of grabbing the brush, Zhao Youju also learned from him to shake his head: "I can't use it, I can't use it." ”

That Xiao Xiucai was good-tempered, and he was not annoyed when he heard Zhao Heju laughing at him, so he returned the pen to Zhao Heju and said, "You teach me to use it." ”

Zhao Youju held the pen and did not hesitate to write the words "Da Yan Qiu Yi" on the paper he handed over. Xiao Xiucai first stared at him in a daze as he grabbed the pen, and then in a daze at the four words on the paper, and after a long time, he stared at Zhao Youju in surprise and suspicion: "You also know that Dayan seeks one?" ”

The congruence theory established by Gauss, a later mathematical genius, first appeared in China in the "Sun Tzu Sutra of Calculations", which was written in the fourth century, and Zhao and Ju remember that Qin Jiushao had a very in-depth study of it in the book "Nine Chapters of Mathematics" a few decades later, nearly 600 years earlier than Gauss. The speech and demeanor of Xiao Xiucai made Zhao Heju feel that although he was called "Xiucai", he was afraid that he was far less interested in the book of sages than these miscellaneous studies called "side-door left-mindedness", so he wrote these four words to test him.

Hearing his question, Zhao Heju smiled slightly, but did not answer, and handed over the drawing to Fang Youcai: "Make a big Kong Ming lantern according to this pattern, and then tie a basket under the Kong Ming lantern." ”

"Yes." Fang Youcai looked at the picture, and then said in surprise: "It's so big, it's several times bigger than an ordinary lamp, can it fly into the sky?" ”

Xiao Xiucai couldn't understand the length unit marked on the drawing, Fang Youcai often made things for Zhao Heju, but he understood that according to this length, making Kong Ming lanterns was several times larger than ordinary Kong Ming lanterns, and with the heat of the candle alone, I was afraid that it would not be able to take it to the sky.

"You just do it." Zhao Youju said lightly.

"It's impossible, Kong Ming Lantern is just carried to the sky by heat, if it is too heavy, the gas will not be able to carry it." That Xiao Xiucai interjected on the side.

Zhao Youju ignored him, but Fang Youcai, who had just raised the question, refuted: "Our little master is the smartest, he said that if he can get on, then he will definitely be able to go!" ”

"How is this possible?" Xiao Xiucai said to herself.

Zhao Youju still didn't talk to him, but just pointed to the drawings one by one to explain to Fang Youcai, and after finishing speaking, he said leisurely: "What is it to send a headlamp to the sky, it is a big living person, and it can also be sent to the sky." ”

After saying this, he glanced at Zhao Zi: "Let's go, carpenter Fang, we must send this to Zhuangzi in three or five days." ”

He ignored Xiao Xiucai, but Xiao Xiucai was so anxious that he scratched his ears and cheeks, if it wasn't for Zhao Ziyue to stop him, he was afraid that he would rush forward and grab Zhao Heju for questioning. Seeing Zhao Heju go out, he didn't ask Fang Youcai to see the mill, but followed Zhao Heju out of the door: "Little brother, little brother, how can you send people to the sky?" ”

Zhao Youju looked back at him and smiled faintly: "You scholar, don't read the sage books, what are you doing chasing me as a child?" ”

Xiao Xiucai's eyes widened, as if he didn't hear what he said, and asked himself: "Little brother, please, how can you send people to heaven?" ”

The snow outside was falling heavily, and Zhao Ziyue put a fur cloak on Zhao Heju, and then blocked Xiao Xiucai again: "Hugh is entangled, my little master is going back to the village." ”

"Little brother, little brother, how are you willing to tell me, how to send people to heaven?" Xiao Xiucai still followed behind and shouted.

"You're a talent, aren't you afraid I'm bragging?" Zhao Youju turned his head and smiled, his words made Xiao Xiucai stunned, but then, Zhao Youju said again: "You want to see my mill again, and you want to know how my pen is made, and you want to know how I can do great things, and you want to know how to send people to heaven." You and I are not related, this is my family's absolute school, why should I teach you? ”

Xiao Xiucai was stunned when he heard this, thinking that after he met this child, he kept asking him, what he said made sense, the two were not related, why did he teach himself?

Besides, how could this child, who was only eight or nine years old, understand so much, even if he was born with a genius, it was impossible for him to know what his doubts were. Perhaps, as the boy said, he was bragging about it?

He was in a daze here, but Zhao Youju and Zhao Zi said that they gradually walked away, and after a while, Xiao Xiucai heard Zhao Youju shouting from afar: "In the afternoon of Yuan Xi, you can come to my Yuzhang Villa and see me magnify the Kong Ming lantern!" ”

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(Don't make up a joke, just stretch out your hand to the officials, the new week begins, the battle on the new book list is tragic, and you urgently need the support of recommendation votes!) ）