"Knowing an+1=an-3, what is the sequence {an}?"

Pu Tong played with the ripe apple in his hand, and looked at Xie Mu who was scratching his ears and cheeks in front of him with burning eyes, wanting to wait for him to make this question.

Today is their third day in Lingqu Village, Qingzhou County, and after last night's red carpet night, Pu Tong only felt much more relaxed.

They don't have anything else to do in this small village, and they have seen the scenery and customs almost, so it is better to take this opportunity to learn and improve themselves.

As a master, isn't it reasonable to help him study part-time?

"Ah......h

Xie Mu wrote and drew on the scratch paper for a long time, and he could guess that this thing was a series of equal differences, but he couldn't explain it clearly.

You must know that he has been filming in the crew since the beginning of this semester, and he didn't take a single math class in his sophomore year of high school, so it's strange to do this kind of problem.

"Mu, although you are a star, you still have to study hard." Pu Tong sighed, "Don't talk about it, Ling Ling is so good at studying, you will definitely go to a famous school when the time comes, you can't even touch the taillights of other people's cars, how can you ...... it"

Last semester, because of Ding Lingling's tutoring, Xie Mu's learning progress was rapid, and he could have become a top student according to this development, but unfortunately this kid was put away.

"It's okay to have a city, it's very convenient to visit a university!" Xie Mu smiled disappreciatively, "Besides, it is difficult for you and your sister to get together." ”

That's right......

Since Pu Tong went to Beijing University once, he was deeply impressed by the building and the lake, and if he could, of course he would like to be admitted to this highest university in China.

He still has a good hope of being admitted if he maintains his current study habits, but Yu Su is afraid that he will not be able to do it.

It's not that she underestimates Yu Su, she doesn't study too seriously, her learning talent can only be said to be above average, and her mind can't be completely focused on studying......

If you can get into the best university by talking and laughing every day for people who have only studied hard, it will be a little too unfair to other students who have studied hard for three years.

As Xie Mu said, he and Yu Junjun are not forced to enter the same university, as long as they can be in the same city, it is not a good flavor to go on a date.

"You're right...... However, I still hope that you will study more seriously. Pu Tong touched his nose and still urged him.

The two of them are different from themselves and Yu Yun, Ding Lingling's health is not good, if Xie Mu is in the same school as her, it will be more convenient to take care of her.

"Got it."

Xie Mu nodded perfunctorily, obviously not listening to Pu Tong's words, for a person like him who walks the star path, even if his academic performance is top-notch, he will not need it.

Pu Tong didn't know how to explain it, when this kid knew Ding Lingling's situation, he would definitely regret his salted fish......

In those years, we made a big mess, and sooner or later it will become a big loss.

People, only after experiencing setbacks will they grow up, he just patted Xie Mu on the shoulder helplessly, the master led the door, and the cultivation depended on the individual.

"I'll tell you about it......"

He was about to become a male lecturer who was proficient in human nature, but he was interrupted by the song "Ordinary Road" that suddenly sounded.

"Master, I'll call."

Xie Mu smiled, quickly took out his mobile phone and clicked on it, Pu Tong rubbed his eyebrows on the side, someone really used his voice as a ringtone...... It's embarrassing.

Maybe other people don't feel this way, but it's still quite strange to hear your own voice ringing regardless of the occasion.

"The third aunt is awake, do you want to come and have a look?" On the other end of the phone was the voice of Grandma Xin's neighbor's aunt, who saw that the old man had woken up and notified the two of them as soon as possible.

Xie Mu and Pu Tong glanced at each other, they originally came to look at grandma for Ling Ling, but now that the old man finally woke up, they naturally didn't dare to delay, and the old man said that he would sleep and fell asleep again.

The road in the village is not ripe, and it looks intricate for the first time, but as long as you are familiar with it, you can take care of the iconic scenery and go, and you will definitely not get lost.

They passers-by also saw the program group recording a variety show from a distance, and it seemed that they were doing some small games between parents and children......

"Master, what should I do if I'm a little nervous?"

Approaching the Xin family, Xie Mu only felt that his heartbeat was a little faster, if his grandmother asked him about Lingling, and he couldn't say why, what should he do?

In the final analysis, he is just Lingling's netizen, can he really meet his grandmother instead of her?

"What are you afraid of, no one is suitable to replace her except you...... Pu Tong smiled, "Besides, isn't there still me?" ”

Xie Mu was a little relaxed when he heard this, and it was precisely because he knew that his grandmother was of great significance to Ling Ling that he was nervous and worried that he would mess up.

If he was hated by the people around him because of his single-parent family when he was a child, but there was only one grandmother who was unconditionally good to him, he would definitely remember this kindness for the rest of his life.

In fact, the reason why many people go astray is because of their deformed childhood, which has created their dark character.

Perhaps for Ling Ling, Grandma Xin is not only the only person who is good to her, but also a person who made her stick to her heart in her gloomy childhood and taught her to be gentle and upward.

Grandma Xin's house is still a little deserted, perhaps because the old man's health has improved, after knowing that she can't get any benefits, her two sons have already gone back, leaving only her daughter, son-in-law and neighbor's uncle and aunt to take turns to take care of them.

Hearing that someone was coming, the aunt went out to beckon them in, Grandma Xin was still recuperating in the side room, and when Pu Tong and Xie Mu went in, the old man was leaning on the side of the bed and drinking porridge.

Grandma was lying on the hospital bed, her ancient bark-like skin stood out on the sheets, and her life did not seem to be easy......

The old man looked obviously ill, not only was his face pale, but he also had to rely on his daughter's support to drink porridge, which was really weak and tight.

But the old man's expression was not sickly, and there was always a gentle smile on the corner of his mouth, and when he saw the two of them enter the door, he nodded to them.

Xie Mu was suddenly a little moved, maybe only such a gentle old man can teach a girl like Ling Ling.

He looked at the old man seriously, and was stunned for a long time but couldn't speak.

"Hello grandma, we are friends with Ling Ling." Pu Tong saw that he was stunned, so he could only take the initiative to pull him to say hello together, no matter what happened, they couldn't be rude as juniors.

Grandma Xin nodded, but only looked at the faces of the two of them, and only after a long time did she set her eyes on Xie Mu.

"How is Miss Ling doing now?"

Half of her body has already been in the ground, and she naturally understands that "being generous is friendship, and being cautious is love" and other experiences, Pu Tong is generous and calm after entering the door, and should just be Ling Ling's friend, but this one ......

"She's doing well."

Xie Mu scratched his head, although he didn't know what Ling Ling's life was like now, but she had more now than before.

"Not only the two of us, but she now has many friends who will care about her, accommodate her, and talk with her......"

Xie Mu replied very seriously, and Grandma Xin was stunned for a long time when she heard this, and then nodded with a smile.

Yes, compared to when she was a child who was disliked in every way, she now has many friends and is no longer lonely.

Xie Mu and Pu Tong clearly saw that two lines of tears had already flowed from the corners of the old man's wrinkled eyes.

"Okay, okay, my hard-working girl won't be disliked by others anymore......" Grandma Xin's voice was a little dry, "to hear her doing well is a hundred times better than good medicine for me." ”

The corners of the old eyes were soon soaked with tears, and in the blurry and wet picture, she seemed to recall the scenes of the past.

The two of them, one is the mother who doesn't want her son, and the other is the daughter that her father doesn't want, and they sit in the courtyard on weekdays and chat and watch the sky, but they are also quiet and happy.

"Although the children don't come to see me often, their days are prosperous."

"I'm half a person who has fallen into the ground, money and reputation are useless, I don't bring it in life, I don't bring it in death, I don't seem to have anything I can't let go of when I live to this one."

"Muratou Yinghong is two years younger than me, and it has been gone for three years, I have lived for so many years, and I should be content......"

Grandma Xin suddenly looked up at the courtyard outside the window, and for the first time there was a little sadness between her eyebrows.

"But Ling girl, I can't rest assured, I really can't rest assured, she is a hard-working baby, I'm afraid of my wife, I'm afraid that I'll just leave like this, and no one will care about her!"

Her hard-working girl, if there was no accident, how could she not come to see her......

Grandma knows that you're not doing well.

(End of chapter)