The most depressing thing here is the little princess Erhua in the grassland. She has been in Chang'an for more than a month, but except for seeing a few people the next day, she basically didn't see anyone else in the rest of the time.

I heard she was busy, but she didn't know what she was busy with. Anyway, she lived a stable life here, with money, delicious food, and a place to live. She also took her to play everywhere, from Chang'an to Luoyang and back from Luoyang.

But she remembered what she came here to do, she wanted to marry her! But what about the dear? The princess was gone, which made the little princess very depressed, and even rushed into Song Beiyun's office with a whip.

But Song Beiyun was not here very much, so he came several times but didn't catch anyone...

Later, he asked about Princess Taiping's residence everywhere, but was finally arrested by the official from the yamen as a spy on the grassland. In the end, the Imperial City Department brought her out.

"Ah, why didn't he see anyone? Do you think I'm not worthy of him?" The little princess has long since stopped staying in the inn. After all, she is a princess, and she still needs basic treatment. She now lives in a small courtyard with spring flowers and someone serves her, which is so comfortable: "But he doesn't like me, he treats us so well. It's so strange."

"Maybe it's because of the busy schedule." The old servant sighed, "The eldest princess has come to write a letter, saying that if things don't work, let's go back."

"That won't be true. There is no such beautiful brother in the grassland and desert." The little princess said with a pout, "I can't forget it when I first met him."

The old servant didn't say anything, but she actually knew it. For the Khan, this daughter was not as important as the grassland. Letting her marry her was just to send her as a gift and then protect her by the way.

Otherwise, how could it be like this? The Khan's daughter is always busy and prosperous when she gets married.

"Is Princess Erhua here?" At this time, a female official knocked on the door and entered the courtyard. She said heroically: "I am on the order of Song Beiyun and Song Supervisor to send a message to the princess."

"Where is his son? Why don't you come?" The little princess looked around curiously: "I haven't seen anyone."

"Mr. Song is very busy, and it is really inconvenient for the lonely man and widow." The female official handed over two letters to Princess Erhua: "One of the letter is for you, and the other one below is for you to send it to the Khan of the Golden Horde. Lord Song has instructed that the letter must be delivered to the Khan, which is related to the livelihood of millions of people on the grassland."

When she heard such important content, the little princess's face changed. She quickly put the letter to her father carefully in her arms, and then opened the letter Song Beiyun gave her.

The letter was actually written in Xiongnu text. The little princess had no dyslexia at all. After reading it, she happily ran over to the old maid and said, "Ah my husband, my husband, let me deliver the letter well, saying that this is a task for me!"

The old maid sighed, it was clearly just to use her to deliver letters. The only one who could deceive those sweet words was just a pure girl like a snow-capped mountain.

But what else can I say? She is just a little daughter that my father doesn't like. It's already a happy thing for her to coax her.

But it is obvious that this aunt underestimated Song Beiyun's generosity. When the female official took them to see the gifts sent by Song Beiyun, even the "informed" old maid was shocked.

There are carriages of silk, jade, candy, good wine, specialty food, five carriages lined up in a row, full of momentum, all of which are all the things this little princess once mentioned her favorite.

"So much sugar!" The little princess Erhua hugged the box bigger than hers: "There are all candy pieces, red, white, and crystal-like!"

At this time, the female official stepped forward and said, "This is all gift from Lord Song to the princess. I also hope that the princess can set off soon. If the weather is hotter, the sugar will melt."

"Yes, yes, I have to leave today." The little princess hurriedly ran into the house: "I want to go back to show my sister. She didn't have much more things when she got married."

After a while, she packed up and walked out, and the female official led them out of the city. Outside the city, there were a group of princess-level ceremonial guards waiting there, beating drums and drums to send her to the border.

"When I come back, I must dress up beautifully." The little princess shook her feet in her carriage with a piece of candy in her mouth and said, "Chang'an is so good, I like this place so much."

The honor guard convoy gradually left, and Biluo, who was standing on the city gate, looked at Song Beiyun with laughter and cry: "You just cheated her away?"

"Send the plague god." Xiao Song spread his hands: "What are the benefits of staying here?"

"She's pretty cute."

"There are so many cute girls." Xiao Song lay on the top of the city and blew the breeze of early summer: "I'm not a hungry ghost in lust."

"What my husband said," Biluo chuckled: "Now the little princess is gone, so please feel relieved."

"Yes." Xiao Song stretched: "Now, I'm relatively free until the autumn harvest. The arrangements here have been set up, so you can help Jin Ling'er with the rest."

"yes."

After everything was ready, Xiao Song also began to enter the workshop and went into seclusion. It was almost halfway through this year. His technological development plan had just begun. This is the foundation. Even if politics is played with, if technology is not good, it is not good. This thing cannot be faked.

The highlight of this year is chemistry and metallurgy. The chemistry aspect starts with cement and biogas tanks, while metallurgy starts with heat treatment.

Cement is simple, but the difficult thing is to treat biogas. First of all, how to make biogas transform energy efficiency, otherwise it will not consume it. This thing is a flammable and explosive product, which is very dangerous.

Therefore, the current difficulties and difficulties are focused on the collection and use of biogas.

You should know that this thing is a good thing. If the feces produced in the city are marshmallowed every day, the problems of best maturation waste and top-level fuel can be solved.

In order to solve this problem, Xiao Song has been out early and back late every day since he was in seclusion, and he smells of poop from time to time. But after all, this is something he likes and is good at doing, but he feels bitter at all.

It was just because the taste was bad, so the steel egg was reluctant to let him hug it...

The number of students in the School of Chemical Engineering has surged several times after the start of the School of Engineering. Now Xiao Song is the only gold medal lecturer. He uses his spare time to find ways to make periodic tables of elements and make experimental props.

Through many contents that can be achieved at this stage, we instill knowledge in these people who are willing to learn chemistry day and night. In order to enable these people to better accept this content, he often transforms myths that are indisputable into chemistry knowledge to tell them.

For example, when Pangu opened the world, the upper clear and the lower turbid, the clear means hydrogen. This hydrogen is very light and can burn. After it is burned, it will be water and it will turn into rain...

Although he knew in his heart that this was a random fabrication, the people below didn't know that they admired Teacher Song very much and really developed a strong interest in chemistry.

That day, Xiao Song had just finished class in the morning and was about to have lunch and went to the biogas tank to take a look, a man came to him with a bowl of rice and asked Xiao Song a lot of questions.

"Mr. Marquis, why do you think this chemistry is called chemistry? How do you interpret the word "hua"? Is it the study of chemical substances?"

"There are not so many scattered things, they are the transformation of change. Everything in the world can be changed, and it is not unchanging. This discipline is to explore new changes."

"But...isn't that a magic art?"

"The art of immortals... is to create something out of nothing. But where does it produce something out of nothing in the world? They all come from change." Xiao Song pointed the table: "A table and a chair, a day and a ground, all of them are like this. The principles of things and the way of transformation."

“It’s so difficult…”

Xiao Song laughed and patted the boy opposite: "The stupidest fool in the world knows that you and I can't touch the stars in the sky, right?"

"Um."

"But..." Xiao Song stretched out his hand and clenched his fist into the sky: "But this does not prevent you from trying the smartest person in the world."

The young man's eyes suddenly lit up, he stood up and bowed to Song Beiyun: "Mr. Xie's advice."

"Remember, this subject is far more important than learning."

In fact, the Institute of Technology also recruits female students, but they are all young boys and girls. It is inevitable that they will make trouble when they are together all day long, and the reputation of those girls is not very good, so the Institute of Technology is divided into colleges for men and women.

The Women's College is also a different world for Song Beiyun. He is really curious about the daily life of these girls who insist on learning to study despite secular prejudice. He wants to see...

But the reality is cruel after all. Even he is not allowed to enter the Women's College, because the guards of the Women's College are all Qiao Yun's sisters, and he will be questioned by his home that night if he wants to enter.

But no matter how much he thinks about it, after becoming a role model, Xiao Song's speech and behavior have been raised to a higher level. He has never sweared in front of the students, nor has he teased the female student.

In the eyes of others, Song Beiyun was the most powerful minister of the Song Dynasty and a veritable nine thousand years old. But in the eyes of students of the School of Engineering, Mr. Song was a gentleman who was polite, humble, enlightened, reasonable and decent.

Sometimes when he passes by the gate of the Women's College to see the young girl's thighs, many girls will peek at the scholar in white with red faces on the wall. It is no exaggeration to say that Song Beiyun is the deepest admiration in the hearts of many girls. They are not easy to tell others, but the like in their eyes cannot be hidden.

One day, Xiao Song was invited to the students' party. That night, he was secretly given a handkerchief with his name embroidered by no less than ten girls of fifteen or sixteen years old.

He took these handkerchiefs home and were quietly stuffed into the box as a souvenir.

In this way, a summer was over after all, and the autumn wind brought good news that made Song Beiyun jump three feet high.
Chapter completed!