Six years of family affection has been wasted. Don't regret it if you dare.

The two of them were very busy, and the two of them were very busy.

"Professor Zheng, look, isn't that your notebook?" Without Teacher Li's reminder, Professor Zheng had already noticed the notebook in Ye Mo's hand, and then hurried over.

"Classmate, can you let me see the notebook in your hand?" Professor Zheng was obviously a little excited.

"Ye Mo, why don't you give the notebook to your brother? Professor Zheng is here, what are you still holding the notebook for?" Su Qinghe said while looking at Ye Mo with a warning look.

"Su Qinghe, you'd better not mess with me. I don't want to say your dirty things, but it doesn't mean I won't say them. Don't force me or you will regret it." Ye Mo looked at Su Qinghe with disgust.

"Brother Ye Mo, how can you say that about Mom? Mom is doing this for your own good?" Before Ye An finished speaking, Ye Mo cursed, "Get lost."

Then he smiled slightly, touched Xiao Youyou's head, and handed the notebook in his hand to Xiao Youyou, and then said softly, "Youyou, this notebook belongs to that old man."

Xiao Youyou took the notebook and first glanced at Ye Mo, then at the middle-aged man next to him. The middle-aged man gave Xiao Youyou an encouraging look, and Xiao Youyou came to Professor Zheng with the notebook.

"Hello, Grandpa, this is for you." Xiao Youyou handed the notebook to Professor Zheng very politely.

Professor Zheng first glanced at Su Qinghe and her son, then at Ye Mo and the middle-aged man behind him, and finally set his eyes on Xiao Youyou's face.

Innocent, well-behaved, sensible, the most likable thing is that pair of bright big eyes, which are full of wisdom and hope.

"Child, thank you for helping grandpa find important things. You are such a good child." Then Professor Zheng gently stroked Xiao Youyou's head to express his gratitude and thanks.

"No need to thank grandpa. Dad said to be a good person and a meaningful person."

Although these two simple sentences sounded different to Professor Zheng, he looked up at the middle-aged man in front of him. He was thin but stood straight, with a sad face but still upright, but there was a little helplessness in his resolute eyes.

This was a middle-aged man with a story. He turned around and whispered a few words to Teacher Li, and then Teacher Li turned and left.

Then Professor Zheng carefully opened the notebook and checked it page by page.

It turned out to be the Navier-Stokes equation, one of the seven major mathematical problems in the world. No wonder Professor Zheng was so nervous.

"Fortunately, they are all here, all here." Professor Zheng's nervous mood finally calmed down. This time, Professor Zheng came to No. 1 Middle School to do academic research. The Navier Stokes equation was put into high school as a subject. This notebook recorded many novel knowledge points and knowledge frameworks.

These are all analyzed from the perspective of high school students. Once lost, the academic arguments of the past few days will all be reset to zero, so Professor Zheng is so nervous.

"In fact, the Navier Stokes equation is the culmination of fluid mechanics, and its application is very wide, such as aircraft, blood circulation, or weather, ocean currents, etc.."

"What fluid mechanics has to do is to distribute various physical quantities in the flow field under certain conditions at any time and any position."

"Among the common physical quantities are pressure, temperature, speed, density~~~."

Ye Mo said a lot of his own insights on the Navier Stokes equation. Although these are simple, from the perspective of high school students, it is the first time that Professor Zheng has heard them. They are clearer, more concise and more concise than what is recorded in his notebook.

For a while, Professor Zheng was so excited that he trembled.

"My classmate, are you also a student of No. 1 Middle School? You are so talented in mathematics, why didn't I see you at the seminar a few days ago?"

"Professor Zheng, I am a student of No. 19 Middle School, and it is just a coincidence that I came here today."

"How can such a good student be in No. 19 Middle School? It's impossible?" Professor Zheng was puzzled.

"Professor Zheng, Ye Mo is my brother. We discussed the Navier Stokes equation together a few days ago." Ye An said hurriedly, seemingly helping Ye Mo explain, but in fact, he said that this conclusion was reached by the two of them together.

"Yes, Professor Zheng, Ye Mo asked my son for advice a few days ago." Su Qinghe quickly tried to smooth things over.

"Ye An, Ye An, I seem to have seen him on the campus star list." Professor Zheng briefly recalled, and Teacher Li beside him hurriedly

He said, "Ye An is ranked ninth in the school and is a student in the elite class."

"Oh, that's right, otherwise why didn't I see you at the seminar?" Then Professor Zheng nodded gently and said to Ye An, "You are very good. It's really good to have such insights. You should also participate in the next seminar."

Then Professor Zheng took the two large bags of snacks bought by Teacher Li, handed them to Xiao Youyou with a smile, and said, "Thank you, little friend." He turned around and was about to leave. Obviously, he regarded Ye Mo as a hearsay. How could there be such a math genius in No. 19 Middle School?

Ye Mo didn't say anything, but just sighed softly: "Professor Zheng is just like this?" Although the voice was not loud, Professor Zheng and others heard it. Then Professor Zheng stopped and turned to Ye Mo and asked, "What do you mean, little friend?"

"Literally."

"Youyou, let's go, big brother will take you to eat Ke De Chicken." Then, ignoring the surprised eyes of everyone, he held Xiao Youyou and took the middle-aged man to Ke De Chicken not far away.

Professor Zheng muttered "Interesting" and walked towards the school without stopping.

~~~

In the Keen De Chicken restaurant, the little girl was very nervous, and the middle-aged man was relatively calm, but his face was very ugly. Ye Mo certainly knew what was going on.

"Nothing, just taking Youyou out for a meal, don't take it to heart." Then Ye Mo ordered a family bucket and a few glasses of juice, and little Youyou was very happy.

"Why don't you explain to Professor Zheng, these theories are all your own understanding." The middle-aged man only asked for a glass of boiled water, drank it slowly, and asked the question in his heart.

Ye Mo then carefully looked at the middle-aged man, and then smiled, "Is it necessary? When people already look at you with tinted eyes, explanations can only be regarded as quibbling by those people. Besides, morality is something that cannot be changed."

When the middle-aged man heard the word morality, he couldn't help but laugh, "You mean they are immoral."

"Almost"

"Formally introduce yourself, Leng Feng, a retired soldier, a scout." Then Leng Feng stretched out his right hand, and Ye Mo also straightened his body and stretched out his left hand at the same time, "Ye Mo, a student of No. 19 Middle School, I am very happy to meet you, Brother Leng Feng."

"You are an interesting student. There are too few young people nowadays who can live so transparently."

"The more you experience, the more you see, the more you understand." Ye Mo said immediately.

"The lady surnamed Su is your mother, and the one named Ye An is your brother."

"It was before, but not now. Ye Mo didn't want to say more, but seeing Leng Feng's clear eyes, he decided to briefly explain the situation."

After listening to Leng Feng, he was silent for a long time, and finally said "There must be some secrets. Anyone who can sit in that position will not make such a low-level mistake."

When Ye Mo heard this, his eyes lit up and he thought, "This Leng Feng is not simple, definitely not a simple veteran."

"Brother Leng Feng, what's the matter with Xiao Youyou?"

"Well, this child is quite pitiful. I found him at the door of the hospital on New Year's Eve."

"Orphan?"

"Not entirely."

"Why, because Youyou's parents left something behind, but it's not time to recognize each other yet."

"You mean you still have contact."

"Not us, they can contact me, but I can't contact them, and I don't know who they are. I only know that Xiao Youyou will take Youyou home when she is 18 years old.

"So that's it."

Ye Mo suddenly thought of something and asked, "Brother Leng Feng, can you do me a favor?"