On the way back to the courtyard house.
"Laugh if you want to, don't hold it in! Hmph..."
Old Qin, sitting in the back seat of the SUV, looked a little embarrassed and awkward, and didn't say anything irritatingly.
"Teacher, I'm driving carefully!" Chen Xihua, who was driving in front, said, glancing at the rearview mirror.
She was indeed holding it in a bit, her lips twitching incessantly. This old man, at his age, was still getting beaten up.
Miao Huizhu did the same, but she didn't make it as obvious, afraid that the teacher would feel embarrassed, so she bit her lip tightly.
Just as they were leaving the cultural square, Old Man Qin had finished being tested by Master Chang, and everyone else had left one after another.
Master Chang chased after Qin Xian, hitting his calf with his cane, his old face dark with anger as he cursed:
"Qin Xian, you brat, you're over sixty years old and still acting like a child. You've returned to the capital and haven't even seen your family."
And when you were young, you actually played the role of running away from home, and you've been gone for over thirty years! You heartless scoundrel...!"
"Teacher, I'm back now, aren't I? Please don't be angry, anger is bad for your health!" At that time, Old Man Qin was very pragmatic, forcing a smile and pleading for forgiveness in a low voice.
Old Qin was thinking, "Master Chang is already in his eighties or nineties. What if he gets upset and something bad happens to him? That would be terrible."
"Who's your teacher? Don't call me teacher, I can't be your teacher!" Chang Feng was already panting after hitting him twice.
Fortunately, he was supported by his grandson Chang Yi'an and stood up, but he didn't forget to glare fiercely at Qin Xian.
In fact, before Qin Xian applied to Nansheng University, Chang Feng had already seen Qin Xian's talent in calligraphy and traditional Chinese painting, and had taught Qin Xian for a period of time.
Originally, Chang Feng was thinking of giving Qin Xian another assessment before accepting him as his apprentice.
Unexpectedly, Qin Xian, that brat, applied to the University of Southern Province and stayed there for more than thirty years.
Moreover, Chang Feng was furious when that old man, Lao Zou, who rose to fame at the same time, stole his apprentice.
Back then, Chang Feng would always secretly curse Qin Xian for being heartless, and he even vowed never to take on any apprentices for the rest of his life.
Actually, no one with more talent and charisma than Qin Xian was found until two or three years ago when he met Chen Xihua.
Who would have thought that the little girl was Qin Xian's apprentice, who was also Old Zou's grand-apprentice?
Chang Feng was somewhat envious of Lao Zou, even though he had passed away.
However, even though Qin Xian didn't formally become his disciple, he was still his teacher.
Of course, Qin Xian thought the same way. Master Chang had taught him calligraphy and traditional Chinese painting, and he called Master Chang his teacher.
Respect for teachers and the Way has always been ingrained in Qin Xian's upbringing. Although he never formally became Chang Feng's disciple, Qin Xian always held Chang Feng in high esteem.
Therefore, whether as an elder or a teacher, Qin Xian would accept any reprimand from Master Chang.
Hmph, let those two students laugh at me if they want!
At this moment, Chen Xihua had already parked the car on the side of the road: "Sister Huizhu, do you really not need me to take you home?"
"Hmm!" Before even returning to the courtyard house, Miao Huizhu wanted to get off the bus halfway there.
Some time ago, she was detained in a courtyard house by her teacher. Now that the calligraphy and painting competition is over, it's more convenient for her to go back to her own place, which is closer to the garment factory.
"Xiao Wu, I need to go to the mall to buy some things later, so I'll be leaving now." Miao Huizhu picked up her toolbox, opened the car door, and got out of the car.
"Teacher, I'll come visit you at the courtyard house again later."
"Okay, let's go!" Old Qin waved his hand.
Ten minutes later, Chen Xihua and Old Man Qin returned to the courtyard house and found the gate open, which meant that Fourth Sister must have returned.
"Fourth Sister!?" Chen Xihua pushed open the door and called out, then stepped aside to let Old Man Qin come in first.
She followed suit and looked up into the yard.
Chen Xiuhua just happened to peek out from the kitchen doorway, her eyes sparkling, and said with a smile, "Teacher Qin, Xiao Wu, you're back! It's just in time for dinner!"
Chen Xihua noticed that her fourth sister seemed to be in a good mood, and Old Man Qin noticed it too.
"Fourth Sister, what's wrong with you...?" Chen Xihua's eyes flashed, and she asked her fourth sister with a mixture of uncertainty and surprise.
It's highly likely that the fourth sister proved the solution to that mathematical Sd conjecture problem.
This is a problem that was proposed by an American mathematician last year and listed as one of the top ten unsolved mathematical problems in the world!
Fourth sister is indeed a little genius; she's on the path to becoming a mathematician.
"Yes, it was just completed yesterday. Professor Du and several other academicians from the mathematics academy have also deduced and verified it, and the result is certain. We are just waiting for the paper to be published in the international S journal."
Chen Xiuhua was stared at excitedly and in surprise by Xiao Wu and Teacher Qin. She was happy, but also a little shy and modest as she explained.
"Beautiful, Fourth Sister, you're amazing!" Chen Xihua walked over quickly, wanting to pick up Fourth Sister and spin her around like Second Sister did.
"Oh dear, Xiao Wu, you just came back from outside. Wash your hands first. I'm going to serve the food and we're about to eat." Chen Xiuhua quickly slipped into the kitchen to hide, still holding a spatula in her left hand and a bowl in her right.
"Hahaha....…"
Chen Xihua laughed heartily, "Never mind, Fourth Sister was just scared off by my enthusiasm."
Only Fourth Sister is able to stay calm. She came back from the research institute this morning and still has the mind to cook. Shouldn't she go out to celebrate?
Did Fourth Sister know how much of a stir her Sd conjecture would cause in the international academic world?
Even in Chen Xihua's previous parallel world, the 21st century, no mathematician had yet proven it.
Previously, only mathematicians had proposed conjectures, but no one had been able to prove the conclusion.
"Chen Xiuhua, you're very good!" Old Man Qin was overjoyed to hear this.
Although his interests lay in literature, Old Man Qin knew more about the importance of mathematics, physics, and chemistry than the Chen sisters did.
A few days ago, my elder brother was sent by the country to visit the United States.
China is gradually integrating into the international community. To date, China's overall national strength and influence are increasing, whether in defense, economy, or academia.
However, China will also face increasing challenges from all sides in the future.
At this point, Sd hypothesized that if the Chinese verified this, it would be crucial to China's ranking in the international academic community.
After lunch.
"Fourth Sister, are you going back to the research institute this afternoon?" Chen Xihua asked casually while clearing away the dishes. Fourth Sister should still be going back to write her thesis, right?
Chen Xiuhua was a little smug and said happily, "No need, I can rest for a week and go back to school to attend classes when my senior year starts in September."
I had already written the paper on the Sd conjecture, and I was just waiting for the results of the proof steps to come out so I could fill it in directly.
I submitted it to Professor Du for review last night, and when I returned this morning, Professor Du said it had been sent out and was awaiting review and publication.
Actually, she had a feeling last Friday that she should be able to prove it soon, so she started preparing her thesis at the same time.
When talking about her profession, Chen Xiuhua's face radiated confidence and light.
"So, are you planning to go on dates with Ning in the next few days?" Chen Xihua teased.
Fourth Sister had just finished eating and was busy replying to messages. When Chen Xihua bent down to take the bowl from her table, she glanced at her phone and saw that the recipient was Ning Wenfeng.
"Yeah, Xiao Wu, are you envious? He asked me to go to the movies this afternoon."
"Xiao Wu, if you're really envious, you can start looking for a boyfriend. You're already eighteen or nineteen, and none of us older sisters will interfere."
Chen Xiuhua was a little shy at first, but she knew that the more shy she was, the more enthusiastic Xiao Wu would be in teasing her.
Not wanting to be teased by this girl every time, she simply scoffed and asked Chen Xihua in return.
Chen Xihua: "..."
For a moment, she was truly speechless at her fourth sister's words. It seemed that her fourth sister was so used to being teased by her that she had learned to fight back.
"Hahaha, serves him right!" Old Qin laughed as if watching a show.
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