The handsome young man froze when he heard this, turned around and looked up, and found that it was Chu Qian, his eyes flashed with surprise, but his reaction was not slow, he stood up and said politely: "Second brother." ”

In the Chu Mansion, in addition to Chu Jue, there is only Chu Jue, the son of the Wang family, who can be called Chu Zhen as the second brother. Chu Zhen nodded lightly, his eyes still did not leave the nine-square grid on the stone table in the middle of the pavilion, and he silently calculated in his heart.

Jiugongge originated from the river Tuluo book, according to legend, when the ancient Fuxi clan, the dragon horse emerged in the Yellow River, carrying the river map, dedicated to Fuxi, Fuxi evolved into gossip according to this, and then the source of "Zhou Yi". According to legend, when Dayu, Luoyang Xiluoning County Luohe River floated out of the turtle, carrying Luoshu, dedicated to Dayu, Dayu according to this success in water control, then the world for Kyushu, and according to this set nine chapters of the law, governance of society, handed down into the "Shangshu", the name "Hong Fan".

On the river map, the black dots and white dots arranged into a number matrix contain infinite mysteries, and the pattern on the Luo book corresponds to nine numbers from one to nine, and whether it is vertical, horizontal, oblique, and the sum of the three numbers on the three lines is equal to fifteen, people did not know that this is the third-order magic square in modern mathematics, so they called this mysterious number arrangement as the nine-palace diagram.

"This is the homework assigned by the arithmetic science teaching, and it will be handed in tomorrow." There was no warmth and cordiality in Chu Jue's voice, but there was no indifference, lukewarm, and seemed to lack feelings.

"How long have you been counting, how did you crack a small half." Chu Jue in his memory is this character, Chu Zhen didn't feel strange, but said with a smile.

"It's been half an hour, and it's a bit difficult." Chu Jue frowned and replied.

If it is only a nine-square grid, it is nothing at all, Chu Zhen doesn't have to think about it, according to the mantra of wearing nine shoes one, three on the right and seven on the left, two or four for the shoulder, and six or eight for the foot, you can directly write the answer, but the ancients were not stupid, how to crack the nine-square grid is not a secret, and the teachings of arithmetic will not be too much, and come up with such a simple question for students to answer.

On the table is a nine-square grid evolved from the twenty-five squares, the requirement is to add up horizontally and vertically diagonally to get sixty-five, in fact, this topic is not difficult, as long as you put a little thought, no matter how much time, you can definitely crack it.

"Do you want my help?" Anyway, being idle is idle, there is Yun Niang in the attic, and she is not in the mood to read, so it is better to find something to do to pass the time, besides, in order to exercise his thinking ability before, Chu Zhen did not do less nine-square grid games, and now he does it again, and he also feels a little kind.

Clear eyes showed surprise, Chu Jue hesitated, but did not wait for Chu Jue to speak, Chu Zhen had already lifted the pen on the table, recalled a little, on the basis of Chu Jue's cracking, briskly filled it in, filled in twenty-five grids in one go, and then carefully calculated, modified two or three mistakes, and then re-checked to confirm that it was correct, Chu Zhen put down his pen and watched his work with a sense of relief, sighing in his heart that he had not practiced for a long time, and his memory was also rusty, otherwise he would not need to revise it again.

"You're done." Chu Jue blinked, feeling a little incredulous.

"This is quite simple, if it is a forty-nine square grid or an eighty-one square grid, I haven't cracked it so quickly." Chu Zhen said with a smile, in fact, there is a secret to cracking the Nine Palace Grid, but it is too complicated, and it is not clear to explain it for a while, many words are not available in the Song Dynasty, and Chu Zhen does not know how to explain it.

"Thank you, second brother." After receiving the twenty-five grid drawings, Chu Jue said softly, and at the end of the day, he didn't seem to know what to say, so he stood there in a daze, silent.

"How's the academy doing?" Chu Zhi asked casually, striding and sitting on the stone railing by the pond, looking at the fish swimming naturally in the water, the breeze came slowly, blowing up the sleeves of his clothes, and he really felt a little elegant.

"It's still the same as before, nothing has changed, but recently more students have come to ask for advice than in the past." Looking at Chu Qian's free and natural appearance, for some reason, a trace of envy passed through Chu Jue's heart.

"It should be me and the same student who was expelled from the academy." Chu Zhen chuckled and said, "It's really hard for them, they can actually withstand the cynicism of some people." ”

"Originally, the teachers didn't plan to let them enter the academy, but the mountain chief said that these people can be ashamed and then enter, and they have the intention of repenting and reforming, so they naturally want to give them a chance to make amends, and they are specially allowed to enter the academy to observe." Chu Jue explained.

"It's still the mountain chief who understands the carelessness, unlike some people, whose brains are stiff and stubborn." Chu Zhen sneered, the meaning of ridicule was strong, and he didn't know who he was referring to when he was sarcastic.

Vaguely aware that Chu Zhen was expressing his dissatisfaction with whom, Chu Jue did not answer, still with a cold face, standing upright in the pavilion, revealing a lonely and arrogant atmosphere that countless literati and scholars dreamed of.

"Third son, Madame, please go back if you have something." At this time, a good-looking maid walked in outside the pavilion, Ying Ying bowed to the two of them, and said softly to Chu Jue.

"What's the matter with my mother?" After a moment of silence, Chu Jue asked coldly.

"The little maid doesn't know, just let you go back quickly." As if she couldn't withstand Chu Jue's cold gaze, the maidservant lowered her head and replied softly.

"Second brother, I'll go back to the room first." With a hint of depression in his tone, Chu Jue bypassed the maidservant and slowly walked towards the east courtyard.

"Second son, the little maid has retired." The servant girl showed a look of contempt in her eyes, and she didn't wait for Chu Zhen to respond, she turned around and hurriedly chased in the direction where Chu Jue left.

After the two left, the backyard was suddenly empty, only Chu Zhen was left alone, and the servants who usually took care of the flowers and trees in the backyard were nowhere to be seen, looking at the vague reflection of the pond water, although he was not angry and angry, but Chu Zhen always had a bad feeling in his heart.

At this time, Yun Niang should also go, easily jumped off the railing, Chu Zhi sulked, walked quickly through the corridor, returned to the room, and didn't care whether Yun Niang went back or not, took out the homework assigned by Chu Qian, answered carefully and carefully, and unconsciously, did not listen to the things outside the window, and read the artistic conception of the sage book hard.

In the attic of the East Courtyard, Wang's beautiful jade face was as cold as frost, and the stern color in his eyes was fully revealed, and he said coldly: "Jue'er, my mother has warned you several times, why do you always can't remember, Chu Zhen does not seek progress, and he is willing to fall, you have to have less contact with him......." ”

In the face of Wang's sharp admonition, Chu Jue didn't say a word, and lightly touched the twenty-five grid drawings in his arms, a trace of doubt about Wang's words, is the second brother really so mediocre as everyone said?

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