Chapter 209 Backtracking
Lin Zhiqing almost subconsciously mobilized his orbicularis oris and orbicularis oculi muscles, revealing a smile that was almost no different from his usual one.
At this moment, Lu Huai spoke appropriately: "A Qing, this does look a lot like the Brahmagupta model you mentioned earlier."
Lin Zhiqing smiled and nodded: "That's right."
That's right, two squares or two rectangles cut in half from the middle will indeed become a triangle.
"Is this the geometry you mentioned earlier?" Lu Huai asked.
"Well, imagine it as a house. If you cut the two diagonally opposite corners in half, that would be geometry." Lin Zhiqing took the charcoal pencil, ignored the cold sweat on his body, and lowered his head to draw on the picture.
Where she couldn't see, Jiang Liuyun frowned slightly.
…
"So that's how it is. Riemann geometry is really profound." Lu Huai raised his head from the drawing paper, his eyes shining.
"Yes, that's right, the knowledge of mathematics is quite profound." Lin Zhiqing stretched.
Seeing this, Lu Huai immediately stood up and said goodbye: "A Qing, you have been very hard-working these past few days, you should rest early."
"I'll let Aunt Mu see you off." Lin Zhiqing stood up and called Aunt Mu.
Lu Huai walked out of the room and raised his chin towards Jiang Liuyun: "It's almost time for you to change the medicine. Let's go."
Jiang Liuyun nodded, and did not forget to remind Lin Zhiqing: "Qing'er, you should have a good rest."
After seeing Lin Zhiqing nod, he walked out side by side with Lu Huai.
After the people left, Lin Zhiqing closed the window and the door, and the smile on his face completely fell.
She leaned against the door and took a deep breath.
Jiang Liuyun?
Who is Jiang Liuyun?
The son of the Marquis of Zhenyuan, a living devil on the battlefield, and the best of the younger generation in the entire Dasheng.
Such a gifted child of destiny happens to be... Lin Zhiqing's fiancé.
Thinking of this, Lin Zhiqing's lips curled up into a sincere smile.
However, the sarcasm in this smile was not hidden at all.
She sat down at the table, turned over the piece of paper with the triangle drawn on it, picked up the charcoal pencil, and wrote a big "Jiang Liuyun" on the paper.
Does Jiang Liuyun really like his fiancée "Lin Zhiqing"?
With this question, Lin Zhiqing began to recall carefully.
Her impression of Jiang Liuyun started when she first arrived in Dasheng.
At that time, she couldn't say she was miserable, she could only say she was extremely miserable.
Framed, imprisoned, and helpless.
The appearance of Lu Huai, Lu Nanyue and Jiang Liuyun enabled her to gain the qualification to investigate the case.
Time was urgent at that time and she didn't even have time to think too much, but now when she thinks back on it, she feels that many things don't make sense.
At that time, when Lin Zhiqing escaped danger for the first time and communicated with Aunt Mu about the situation of the Lin family, it was already the second day after the accident.
Early the next morning, Jiang Liuyun sent someone back to the Zhenyuan Marquis Mansion to get ginseng and medicine for himself.
But if he really had Lin Zhiqing in his heart, why didn't he bring Lin Zhiqing with him on the day the accident happened?
Even Lu Nanyue came with a medicine box and high-quality medicinal herbs.
If he was too anxious to take care of it, then why didn't he ask himself anything about his health during the entire investigation?
This was in stark contrast to his later behavior.
But to Lin Zhiqing, who had just arrived, Jiang Liuyun was just a stranger at that time.
Lin Zhiqing did not look at Jiang Liuyun from the perspective of her fiancé, so she did not notice this unreasonable thing.
Moreover, after the apparent murderer of his cousin was found, Lin Zhiqing specially sent medicine to Jiang Liuyun because he remembered that Jiang Liuyun had been exposed to poisonous smoke when interrogating Biluo in order to help him.
When Jiang Liuyun saw himself delivering the medicine, he looked a little surprised.
However, Lin Zhiqing only thought that there was a difference between his performance and that of the original owner, so he did not continue to test it.
Now that I think about it, Lin Zhiqing seemed to have never understood what the original owner's attitude towards Jiang Liuyun was, and what Jiang Liuyun's attitude towards the original owner was.
What if the original owner's attitude towards Jiang Liuyun was different from his own attitude towards Jiang Liuyun, so there was an unexpected expression on his face?
In addition, there are many doubts about Biluo's death that day.
Lin Zhiqing focused her investigation on her cousin's house. Due to her distrust of the Lin family, she chose to let Jiang Liuyun and her cousin go to interrogate Biluo together.
After Biluo died, Lin Zhiqing focused his suspicions on the Lin family.
After finding other clues and confirming that the murderer was from the Lin family, Jiang Liuyun was almost no longer a suspect.
Lin Zhiqing was busy proving his innocence at the time and really couldn't spare much time to investigate Biluo's affairs.
Now thinking about it, the murderer Lin Jingya had not revealed any clues at that time, and my uncle and fourth uncle had not made any move. The only one who had the chance to attack Biluo was Jiang Liuyun.
Why did he attack Biluo?
Biluo is the key figure in Lin Zhiqing's escape from punishment.
If it was really Jiang Liuyun who killed Biluo, then his purpose must be to prevent himself from getting away with it.
But why?
What kind of reason could make him hate his nominal fiancée so much and wish her death?
To break off the engagement?
Lin Zhiqing pursed her lips. Based on the information she currently had, she couldn't think of any other reason except breaking off the engagement.
And this reason seems to make sense.
In recent years, Marquis Zhenyuan has not only been able to call the shots on the battlefield, but also has a great reputation abroad.
In particular, he was highly praised for treating the guilty minister well and not taking advantage of the opportunity to add insult to injury and forcing his son to break off the engagement with Lin Zhiqing.
But this praise is based on Jiang Liuyun's marriage.
Judging from her analysis just now, Jiang Liuyun is not satisfied with his fiancée Lin Zhiqing.
But after enduring for so many years, gaining a reputation as a loyal and righteous person is of great benefit to the Zhenyuan Marquis Mansion.
If Lin Zhiqing was kicked away halfway, this reputation would be lost.
From this perspective, if one makes a serious mistake or dies, the marriage will be invalidated.
Such a reason might have prompted Jiang Liuyun to take action against Biluo.
Lin Zhiqing closed his eyes. The chilling feeling in his heart had long since faded away, and all that remained was endless thinking.
She re-analyzed the content she had just sorted out and found almost nothing unreasonable.
Even when she thought about it carefully, she remembered a few things that she had overlooked before.
For example, she had never doubted Lin Jingya's motives for poisoning her cousin and the original owner.
She remembered clearly that Lin Jingya said that she resented her cousin because she got an invitation to the Spring Banquet.
The reason for resentment towards the original owner was that the fourth uncle had feelings for the original owner's mother.
This point about the original owner's mother can be explained by the portrait in the study.
But how did Lin Jingya get the news that her cousin was going to attend the Spring Banquet?
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