The night fog is like a veil, and the moon is like water.

He Lin and everyone got drunk in the Red Pavilion, refused everyone's escort, and staggered home alone.

Closing the courtyard door, he looked up at the bright moon in the sky, his eyes were slightly closed, and two tears flowed down the corners of his eyes and fell into the dust. When I opened my eyes again, my eyes were clear, where was I still a little drunk?

Waving his hand to the old servant on the side, He Lin walked into the study alone, closed the door and bolted the door, pushed open the window and looked around the courtyard, closed the window tightly, lit the candle with flint, and then sat down on the chair and took out a book from his arms.

That book turned out to be a book of "Nine Chapters of Arithmetic"!

"Nine Chapters of Arithmetic" is an ancient Chinese mathematical monograph, and nine famous mathematical masterpieces, such as "Zhou Ji Sutra", "Island Sutra Sutra", and "Zhang Qiu Jian Sutra", are also known as "Ten Books of Arithmetic", which is the peak of ancient mathematics in China. During the Wei and Jin dynasties, Liu Hui commented on the "Nine Chapters of Arithmetic" and said: The Zhou metric system has nine numbers, and the nine numbers are the "Nine Chapters".

The Nine Chapters of Arithmetic include nine chapters: Fangtian, Corn, Decay, Shaoguang, Shanggong, Average Loss, Deficit and Pythagorean, among which the Pythagorean theorem has been widely used in higher mathematics and other disciplines until later generations, and is the "cornerstone of geometry".

It's just that this and Lin Nai are the commanders of the soldiers of the first county, who don't study the art of war, don't think about military supplies, but he can't put it down with a copy of "Nine Chapters of Arithmetic", could it be that he still plans to change his career to study mathematics and become a mathematician?

He Lin put the book on the desk, carefully opened it page by page, and took out a few pieces of "Caihou paper" from the book, but closed the book gently, leaned on the back of the chair and took the few pieces of paper to look at them carefully under the candlelight.

“……”

"On the ninth day of the fifth month, the salt picks up three stones, and the iron ore is twenty nine stones."

"On the first day of the sixth month, salt picks up Wu stone, iron ore twenty seven stones."

"On the seventh day of the seventh month, the salt picks up the nine stones, and the iron ore is one stone."

“……”

There is no such thing as the Pythagorean theorem written on the paper, but what is recorded is the salt and iron deficit of Wei County in the sixth year of Guanghe, which is the salt and iron deficit secretly recorded by Jia An, and it turns out that this book is Jia An's "Nine Chapters of Arithmetic". The ten thousand swords knew that they couldn't escape, and when the white mist was filled, they had quietly handed over the book to He Lin.

He Lin breathed a long sigh of relief, put the paper on the fire candle and lit it, and the tip of the paper gradually rose a circle of smoke, like a hideous face, hovering in the air, and dissipated after a long time.

Seeing that the paper was slowly burning into a handful of white ash, He Lin clapped his hands and lay on the bed: "Fortunately, Na Jia An is dead, and the accounts have not been leaked." Brother Wan, your heroic spirit is not far away, you must look at Brother Fool, Brother Fool will soon let Wang Lina come down to accompany you! ”

Seeing that He Lin had fallen asleep peacefully, a figure on the roof got up and yawned, the corners of his mouth raised slightly, and a few vertical steps melted into the night like a ghost.

……

Early the next morning.

After washing his hands and cleaning his face, Wang Li came to the hall, but breakfast had already been placed on the table, two bowls of corn porridge, a plate of dried meat, a plate of boiled cabbage, and a plate of pickled reeds in sauce.

Woad, also known as Chinese cabbage, was called "woad cabbage" in ancient times, also known as cabbage, yellow sprouts or cabbage. And the reed, is a kind of white radish, the Northern Song Dynasty writer Su Shi also wrote a poem for this special poem "picking vegetables", the poem said: autumn frost dew full of East Garden, reed mustard has grandchildren. I am full with He Zeng, and I don't know how to eat chickens and porpoises.

"Mother! What were you talking about with Xia Yu yesterday? "Sitting on the small table, picking up a bowl of porridge, sandwiching a few pieces of dried meat, mixing with a few bites of weeds and reeds, I have to say, this natural food is cool, although there is not much seasoning, but it is fresh and refreshing, Wang Li patted his stomach regardless of the image, and asked.

"Eat slowly, eat slowly, what are you always doing in such a hurry, and no one is robbing you?" Wang Jiashi glanced at him angrily, then turned his head to look at the girl serving beside him, and said with a smile, "Naturally, it's this girl's matter that I told you Xia Yu." ”

The girl is naturally Zhi'er's sister, called the girl of Xia Chan, that is, the woman who was rescued by Wang Li at the beginning. Xia Chan heard Wang Jia's words, her eyebrows and eyes were half-closed, and a layer of blush appeared on her face.

"Her grandmother was talking to me about her marriage last night. said that it was yesterday afternoon, and the old woman of the Ma family next door came to propose to her on behalf of others. Wang Jiashi suddenly said, "Li'er, although Xia Weng's family has been entrusted to my Wang family, but you have already known the situation at home, except for my mother and son and Xia Weng's family, there is no one else in the family. ”

"What my mother said is that since Xia Bo and Xia Yu have negotiated their marriage, the paper of selling their bodies should be returned. However, Mother, since it is a happy event for my royal family, should we buy some dowry? Wang Li glanced at the helpless girl on the side, nodded and smiled, "Of course, compared to this matter, the child is more curious about which man can hold the cicada?" ”

"Don't make fun of the cicadas." Wang Jiashi smiled and explained, "It's Pei Jiaerlang from the Pei family shop in Ruyi Fang." Cicada Ah Weng said that Pei Jiaerlang's appearance is very thoughtful, honest, and trustworthy for life. ”

Pei Jiajilang? It seems to be called Pei Xu, right? This person Wang Li has some impressions, and he lives in Ruyi Fang, Yongfeng Street, south of the city, which is only one square away from the Wang family. His parents died early, and his brother Pei Ji depended on each other, and the two brothers ran a mountain goods shop in Ruyifang. Pei Jizhu is a master who runs in the mountains and grasses all the year round, and is responsible for the purchase of mountain goods, wild pigs and other goods. Pei continued to be in the house, taking care of the shop and buying and selling. The Pei family can be what it is today, thanks to the two brothers supporting each other.

But when it comes to honesty, Wang Li smiled secretly, honesty may not be true, but chivalry is a little bit, when Wang Li rescued the Xia family, this Pei Xu stood behind him and waved the flag to cheer. Didn't you fall in love with Miss Xia at that time?

After Wang Li finished breakfast and chatted with his mother, he saw Qian Yi, Zhu Tong, Tang Qing, Sun Cai, and Zhou Kang come to the mansion together.

"Rushed back early in the morning, haven't you had breakfast yet? Is Janin's poison cured? Wang Li welcomed everyone to the study, motioned for everyone to sit down at the desk, presented a plate of preserved meat and two cases of preserved fruit, and asked.

Qian Yi and the others smiled, grabbed the preserved meat and preserved fruit and stuffed them into their mouths, and said: "My lord, that stranger is really the national hand of Xinglin, and after giving Ning'er the medicine, Ning'er has been cured overnight. ”

"Well, do you know that the alien has any apprentices or relatives and friends who also understand the meridian soul breaking incense?"

"I didn't hear the stranger mention the apprentice between talking to that stranger back then, so I am not sure about my humble position." Qian Yi recalled for a moment, and a trace of surprise suddenly flashed in his eyes, "My lord, what do you mean?" ”

Wang Li nodded and said, "According to what you said, this Meridian Soul Breaking Incense is one of the top ten strange poisons in the world, and its prescription must be very precious, and not just anyone can get it." Since the Inhuman knows the prescription, and Wan Jian is dead, then starting with the relatives, friends, or apprentices around the Inhuman, we may be able to find some clues that we don't know! ”

"My lord, if you don't say it, I also plan to take the initiative to ask you to investigate the source of this meridian soul breaking incense." Qian Yi smiled, grabbed another piece of dried meat and stuffed it in his mouth, took the cold white open handed by Wang Li, poured a few sips, burped, and then said, "I heard that the strange person is now in my Jizhou, and I will look for it after eating!" ”

Wang Li told everyone about last night's events, and heard an angry roar in the audience: "Such dog thieves don't want to be loyal to the court and appease the people of Li, but they dare to collude with the thieves and act in cahoots, they really deserve to be killed!" ”

Zhou Kang slapped it the desk, and suddenly stood up, just about to ask for help, but felt that his clothes were tight, but it turned out that it was Sun Cai who was pulling him, looking at himself, and he was furious, he broke free of Sun Cai's palm, arched his fist and said: "Brother Sun, if you don't want to go, I will not force it, my lord, let Zhou go alone, and he Lin will definitely be able to take it!" ”

"Brother Zhou, it's not that Sun Cai spared his life, but that the adults have other arrangements." Sun Cai looked at Zhou Kang's cold expression, smiled helplessly, and asked, "Brother Zhou, your martial arts are comparable to adults?" ”

"I'm a straight man, I only have a lot of strength, how can I be a strong martial artist?"

"Since you know that your lord's martial arts are far from being a match for Na and Lin, then let me ask you again, why didn't your lord directly take down Na and Lin last night to correct the law?"

Zhou Kang patted his head, glared at Sun Cai, and said: "You also know that I only have brute strength, and I don't know those fancy intestines, you ask me, how do I know?" ”

Sun Cai coughed lightly, and pouted at Zhou Kang, Zhou Kang touched his forehead and seemed to open his eyes, looking up, only to see Wang Li looking at himself with a smile, Zhou Kang quickly lowered his head and said curtly: "My lord, the lowly position is not talking about you, the lowly position is talking about Brother Sun... My lord, lowly duty... Humble and clumsy, please forgive me! ”

After that, he opened Sun Cai's hand again, and said indignantly: "He also said that he was a good brother, you know that my mind is not clever enough, I said it wrong, and I don't know how to tell me." ”

Sun Cai was stunned, everyone laughed, and Wang Li couldn't help but wonder, this Zhou Kang has a rough personality and a big mind, and he can be regarded as an alternative in the thief Cao Peng.

Wang Li patted Zhou Kang, glanced at Sun Cai approvingly, glanced around at everyone, saw that everyone was solemn, stood side by side, nodded and said: "Sun Cai's guess is right, the reason why Ben Cao didn't catch He Lin last night was because he wanted to put a long line to catch a big fish." It was only an hour or two since we returned from Jiafu, and the ten thousand swords almost slipped out of our hands, and the salt and iron that had been stolen frequently for ten months from the beginning of the year to the present without anyone knowing to provide evidence, what does all this mean? ”

"It shows that Taiping Dao has woven a big net in my Yecheng, and all we know about it are Wan Jian and He Lin. However, please keep in mind that these two are both members of our county's soldiers, so how dare I, the thieves, the Jin Cao, the Hu Cao, the Cang Cao, the Fa Cao and other ministries dare to ensure that the water is clear and spotless? He Lin is in a high position and is unwilling to be subordinate, and Ben Cao is sure that even if he is not the leader of Yecheng in the Taiping Dao, he must be his important minions. ”

Wang Li punched the desk and shouted solemnly: "I order!" ”

Everyone responded in unison, and went straight to the table with their backs to the file.

"Qian Yi!"

"Humble duty!"

"With this Cao Order, visit the old gentleman, and be sure to find out the source of the Meridian Soul Breaking Incense!"

"Zhu Tong, Tang Qing!"

"Humble duty!"

"You two lead your brothers to secretly visit all the people who have been in contact with He Lin in the past month, whether it is a peddler or a dignitary, everyone must be checked for me, and no clues must be missed!"

"Sun Cai, Zhou Kang!"

"Humble duty!"

"I order you two to lead your brothers to closely monitor the Helin Mansion from now on, and not to startle the snakes. However, people who come and go in and out of the house must find out the whereabouts of me, and any wind and grass must be well understood! ”

"No!"