Grandpa Liu Zichen took the Tian Jiajia sisters to the school’s security office and said, “This is Teacher Yang’s student, Tian Jiajia and Tian Wenwen, who are here to visit Teacher Yang.”

At this time, the two young men on duty in the security room were tall and mammoth, sitting in an upright posture, and at first glance they were trained.

Hearing what Grandpa Liu Zichen said, a security guard nodded and said: "I know them, I have seen them online."

Another security guard immediately said, "Are you looking for Teacher Yang? I will inform you immediately."

Hearing the flowers from the security guard, Tian Wenwen on the side quickly stopped and said: "No, no, Teacher Yang didn't know that we came to visit him yet, and we wanted to give him a surprise."

"Oh, that's fine, I'll take you to find Teacher Yang." The security guard said to Tian Wenwen.

Subsequently, under the leadership of security, the group entered the campus.

Because it is the summer vacation, many students are already on vacation, so the campus looks very clean.

"Ms. Yang should be teaching the students in his class now. Let's just go to his class to find him." The security guard said to Tian Jiajia.

"Ms. Yang is in class, isn't it a good idea for us to bother? Why not wait for him to finish class." Father Tian said.

"It's okay. Teacher Yang teaches students differently from other classes. There is no distinction between class and get out of class. His students will study in the classroom every day as long as they want to learn.

You can leave the classroom at any time if you want to go to the bathroom or go out to get some ventilation, and you can leave by yourself if you don’t want to go to class."

"Oh, that's all right!"

While talking, the security had already led a few people out of the back door of the school, and then entered Yang Xin's teaching laboratory.

Because the new teaching building has not been built yet, the classroom where Yang Xin teaches students is in the teaching laboratory building he built.

When a group of people came to a multimedia classroom remodeled by a large laboratory, Yang Xin was sitting in the middle of the classroom.

Before others can see, his five-ring special effects have been quietly applied to all students.

In the classroom, Yang Xin let them learn by themselves, and only students who don't know how to ask him.

After the five-ring special effects are filled, everyone is a genius who never forgets, and his learning ability is exploding, so he lectures to students but affects their learning progress.

Instead of this, it is better to sit among the students and bless them with aura, and then ask him when the students have any questions that they really don't know.

"Teacher Yang!"

While Yang Xin was explaining the knowledge that some students did not know, and adding a halo to all the students, a clear shout suddenly sounded outside the classroom.

Yang Xin looked up and was stunned.

Hearing this voice, all the students in the classroom also looked at the door of the classroom.

"Ms. Yang, let's see you!"

At the door of the classroom, two young girls were quickly walking towards Yang Xin.

"Jiajia, Wenwen, why are you here?" Yang Xin stood up with a look of surprise on his face.

"Summer vacation, let's see you." Tian Jiajia smiled and said to Yang Xin.

And Tian Wenwen stepped forward quickly and hugged Yang Xin.

"Ms. Yang, we miss you so much!"

"Hehe, the teacher misses you too." Yang Xinxin stroked Tian Wenwen's cheeks and tidyed her messy hair.

Then he smiled and said, "You two, you have grown so much taller in a few years, and you have grown more beautiful."

"That's not it, the eighteenth woman has changed." Tian Wenwen said with a smile.

While speaking, she looked around, and then asked Yang Xin: "Are these all juniors and younger sisters?"

"Yes."

Yang Xin nodded, seeing everyone looking at this side curiously, he quickly introduced: "This is the teacher's former student, this is Tian Jiajia, this is Tian Wenwen, both of your senior sisters."

"Hello Sister!"

"Hello Sister!"

I don't know who yelled, and the others shouted hello to senior sister.

"Haha, hello, junior brothers and sisters, my sister and I brought a meeting ceremony for everyone." Tian Wenwen said with a smile.

Immediately ran to the door, took a suitcase from his father, and opened it. It was filled with neat stacks of red red envelopes.

"This is a red envelope prepared by my sister and I for everyone, one for each."

"Thank you Senior Sister, Senior Sister is generous."

Soon, the entire classroom became as lively as a vegetable market.

After some students got the red envelopes, they opened them immediately. Inside was a stack of hundred-yuan banknotes. There were ten full notes, which is 1,000 yuan.

"Although these red envelopes are not much money, you can usually buy more snacks to eat." Tian Wenwen said to everyone.

"Thank you Sister, Sister will always be young and beautiful."

"Thank you Sister, Sister, I love you!"

"Hahaha!"

"Well, your senior sister came to visit the teacher today, so let's stop here for today's study. Everyone will go back to the dormitory to take a bath and change clothes. Today we will go to the cafeteria to have a dinner to help the senior sister." Yang Xin said to all the students.

Then he told Zhang Yuheng: "Zhang Yuheng, you go and inform the students who are playing in the playground, and call them together."

"okay!"

Next, all the students quickly left the classroom and went to the dormitory to take a shower and change clothes.

"Teacher Yang, long time no see." At this time, Tian Jiajia's father said hello to Yang Xin.

"Mr. Tian looks much younger than before." Yang Xin said with a smile to Dad Tian.

"It's the blessing of our two daughters. My mother and I don't need to be exposed to the wind and sun. Isn't this the way it is developed?" Father Tian said.

"You come here to play for a while. I'll give you a place to sleep before we go to dinner." Yang Xin said to Dad's father.

"Trouble Mr. Yang, Jiajia and the others are going to play here this summer." Father Tian said.

Under the leadership of Yang Xin, the group left the teaching laboratory building and then came to the school again.

Yang Xin arranged Tian Jiajia and Tian Wenwen in the girls' dormitory.

Father Tian was arranged by him to the boys' dormitory.

After the three were equipped with new quilts and daily necessities, they would not neglect them.

"Teacher Yang, I will go back first, there is still something to do at home." Grandpa Liu Zichen said to Yang Xin at this time.

"The old man is not in a hurry to go back, and he will go back after eating." Yang Xin stayed.

"No, Liu Zichen's grandmother is still in the city and hasn't come back. The pigs at home have not been fed yet. I have to go back and feed the pigs."

"Let's do it!" Yang Xin said, crying and laughing: "Your family makes a lot of money in a year, so why do you have to feed the pigs yourself?"

"When I get older, I always have to find something to do for myself, otherwise the old bones will become stiff, and the pork I feed is delicious. I will send you some during the New Year." Grandpa Liu Zichen said.

"Well then, you can go back first." Yang Xin nodded.

In the afternoon, Yang Xin and all the students had a dinner together in the canteen, picking up sisters Tian Jiajia and Tian Wenwen.

At night, the three masters and apprentices have time to talk alone.

"Thank you, Teacher Yang!" Tian Jiajia said towards Yang Xin.

"Thank me for what I did?" Yang Xin smiled.

"Thank you for teaching me the knowledge of Chinese herbal medicine pharmacology, otherwise I will not be able to study the technique of culturing hematopoietic stem cells in vitro." Tian Jiajia said in a grateful tone.

"Hehe, no thanks, this is all the inherited knowledge of the seniors, if you can carry forward this knowledge in the future, the teacher will not teach you for nothing."

"Teacher, I will. I am about to graduate with a Ph.D. I spent 300 million to build a small laboratory in the capital last year."

Tian Jiajia said: "Teacher Yang, you don’t know, I’m currently conquering HIV. I have simulated tens of thousands of drug groups and thousands of experiments on the basis of the 3,000 pharmacological knowledge you taught me. I have found the hope of curing AIDS. I believe that I will be able to produce results in a few years. I will give the world a big surprise at that time."

Tian Jiajia looked excited.

"Very well, you really did not disappoint me." Yang Xin was very happy to hear Tian Jiajia's words.

However, on the other side, Tian Wenwen said anxiously: "Teacher Yang, I am quite worried about my sister."

"why?"

"Because HIV-infected people bring too much profit to the medical system, if my sister gets the cure drugs, I am worried that someone will be disadvantageous to my sister."

Tian Wenwen said: "For so many years, people have said that drugs for curing AIDS have been developed, but where are they? They are all inhibitory drugs that require life-long medication. I doubt that even some companies have developed cures. It will not be used, because it will touch the interests of too many people."

"You think the world is too dark!" Hearing Tian Wenwen's words, Tian Jiajia criticized her: "In our country, I don't have to worry about this. As long as I research it out, the country will definitely be put into use immediately. I believe in our country. ."

"But what if someone secretly deals with you before you develop it? I don't want to watch the news one day and find out that you had a car accident or something."

Before Tian Jiajia could speak, Tian Wenwen continued: "Why is Mr. He’s pharmaceutical company being suppressed by so many people abroad? Such a good drug cannot even be sold in some countries. It is not because it harms the interests of some large foreign consortia. ?"

"The European media said that the Chinese medicine for rheumatoid arthritis will kill people if they take it. Why do they do this? Isn't it just to suppress it?"

"Do you know how profitable AIDS is in the medical industry? Although we have less than one million people in China, there are 40 million patients in the world! Every year, pharmaceutical companies all over the world earn tens of thousands from these patients. The profit of billions of dollars, such a large profit is still long-term. If this is destroyed by you, how many people will not hate you? How many people will not want to kill you?"

Hearing Tian Wenwen's flowers, Tian Jiajia retorted: "Then you can't just stop doing this out of fear, right? As long as I don't go abroad, it's impossible for others to harm me."