After redeeming the steam engine model, Zhang Nan was not idle. Instead, he continued to bite the pencil tip and began to think about how to build his Tiangong Department. However, in the end, Zhang Nan did not think about how to build this. Soon Zhang Nan gave up. Anyway, the land in the Qinling Mountains has not yet opened, so why are you anxious? Maybe after two days of opening the land, I will have an idea.

Zhang Nan is not a person who will make things difficult for him. Generally speaking, Zhang Nan will never stand if he can do things while sitting, and Zhang Nan will definitely not sit if he can do things while lying down.

Thinking of this, Zhang Nan went to sleep peacefully.

The next morning, Zhang Nan attended Li Er's morning court as usual. What surprised Zhang Nan today was that Li Er was yawning on the dragon throne, and Zhang Nan could not think about the good place in this mental state.

However, Zhang Nan thought about what happened yesterday, and Zhang Nan guessed that Li Er might have stayed up late to practice mahjong skills. After all, he lost to his father yesterday so much that he even had to be a shorts. Li Er must have to practice hard and get back to the scene another day, but this is just Zhang Nan's guess.

All the things are still the same, but Du He has been brought to the court by Li Erxuan today to replace Zhang Nan's director of the Labor Reform Bureau. Zhang Nan couldn't help but feel a little funny when he looked at Du He's expression that had finally been drought for a long time.

However, what Zhang Nan did not expect was that Li Er announced his title level from now on the morning court today.

"Is it because Li Er was conscientious?" Zhang Nan thought in confusion, but since Li Er promoted him to the title, he still had to express his gratitude to Li Er, so Zhang Nan bowed and thanked him.

After getting off the court, Zhang Nan walked to Du He and said, "Okay, Qinglian, now he is finally an official of the court."

Du He smiled and bowed to Zhang Nan and said, "It's all the master's teachings. I haven't thanked Master for my father's affairs for the last time."

"Okay, I won't talk about this matter. By the way, how is Mr. Du's health recently?" Zhang Nan asked.

"My father's health has improved a lot. My mother has always strictly controlled her father's diet and stayed by her side almost in a row, for fear that her father would go to handle official duties if she was not careful." Du He smiled.

"Training official business? Didn't he let him do it without work?" Zhang Nan said strangely. Now Du Ruhui is just at home, so there is no official business that he needs to deal with.

"Oh, even though my father doesn't care about the matter now, he still wants to do more for the emperor. Now he is studying the five-year steel plan you mentioned by Master, and hopes to make more plans in the same way."

Zhang Nan nodded without comment. Du Ruhui was simply a workaholic. If he was sent to future generations, he would definitely be the employee that every boss was rushing to ask for.

"Okay, go back and tell your father to ask him to pay more attention to his health. If the medicine is finished, come to me."

"Then the apprentice thanked the master first."

"What are you thanking me? No need to thank me. You can order a thousand Turkic prisoners to come out later. I want to go to the Qinling Mountains to open the ground. You can prepare it for me first." Zhang Nan said.

After Du He nodded in agreement, Zhang Nan came to Yuan Tiangang and stayed at the Taishi Bureau to see if he had any results in the middle school chemistry research after a day.

As soon as he entered the door, Zhang Nan did not see Yuan Tiangang or Li Chunfeng's figures. Zhang Nan had to shout in the hall: "Is there anyone? Someone is breathing? Why don't you treat someone here?"

Before Zhang Nan finished speaking, Li Chunfeng lifted the curtain from the inner room and walked out. When Zhang Nan saw it, he was shocked. Is this still the energetic Li Chunfeng? Why does it feel like he was sucked in his soul?

In fact, I don’t blame Zhang Nan for thinking this way, mainly because Li Chunfeng is now wearing a pair of blood-red eyes and two big eye bags, so it is really difficult to connect him with Li Chunfeng before.

"Is the chemistry book I gave them right or wrong?" Zhang Nan tortured himself in his heart.

"Mr. Zhang, you are here." When Li Chunfeng saw that Zhang Nan had arrived, he immediately looked like he had met his relatives, which made Zhang Nan a little confused. When did he have such a good relationship with Li Chunfeng?

As soon as he heard Li Chunfeng say that Zhang Nan was coming, a tinging sound came from the room immediately, and then Yuan Tiangang also opened the curtain and walked out.

When Yuan Tiangang saw Zhang Nan, he immediately bowed and asked, "Qingquan, I won't go around in circles. Who wrote the chemistry book you gave me?"

Zhang Nan thought about it and had to say, "Of course it was recorded by our ancestors who traveled through the world."

Yuan Tiangang nodded and continued, "I understand the truth. The old Taoist in the experiment on air was also tried to do it yesterday from Chunfeng, but the results were no different from those recorded in the book."

After hearing this, Zhang Nan looked speechless. "Nonsense, if you find a different place for you, you won't have to take chemistry classes in later generations."

"It's just that the old Taoist still doesn't understand some things." Yuan Tiangang said.

"Oh? What does Taoist Master not understand? You can tell me that as long as the boy knows, he will definitely know everything." Zhang Nan smiled. Although he is the worst in mathematics and chemistry in his three subjects of science, Zhang Nan felt that he could still handle the problem of ninth grade.

"Why do you need to record this oxygen in a circle? Which hydrogen is there? Why is there a horizontal line between two vertical sticks? It doesn't look like a character, and the painting doesn't look like a painting." Yuan Tiangang asked.

"Well, Master Yuan just needs to understand this as a record symbol. In the language of chemistry, oxygen is a circle, and hydrogen is a horizontal line between two vertical sticks." Zhang Nan said with a smile, but while Zhang Nan smiled, he still admired the two people's ability to accept and learn. After all, he could understand so many of them in one day and do an experiment, which was enough to prove that the learning ability of the two people is not something that could be covered.

After hearing Zhang Nan's explanation, Yuan Tiangang nodded. Suddenly, Yuan Tiangang seemed to have thought of something and bowed to Zhang Nan. Seeing Yuan Tiangang like this, Zhang Nan knew that Yuan Tiangang was not holding back his head.

"Stop, Taoist Master, why are you giving me a hand for no reason?" Zhang Nan said quickly.

"Qingquan, the old Taoist has something to ask for." Yuan Tiangang said with a serious expression.

"You can't be looking for me to become a disciple, right?" Zhang Nan asked with a strange expression.

"How do you know?" Yuan Tiangang looked surprised.

"Why are you people in the Tang Dynasty addicted to becoming a disciple? Why do you want to become a disciple when you see something new?" Zhang Nan complained fiercely in his heart. School starts tomorrow, and you will have to take the high-speed rail back to school. The update is to be determined. If it cannot be updated, please understand. You will be compensated the day after tomorrow.
Chapter completed!