Liu Chen was a little stunned, "Professor Zhang, where are you going to pull me?"

Qiao Xiu was not happy anymore. After finally receiving someone, why was he still intercepted by half? He hurriedly said, "Hey, Professor, Liu Chen is the guest I invited. He must go home with me. You are too careless."

Professor Zhang glared, "You girl is too ignorant of the generalities. She makes contributions to the country and is not careful about the details."

"That won't work. Don't put off such a big hat. Liu Chen must go home with me." Qiao Xiu refused to let him go.

Nuomin pouted and grabbed Liu Chen's clothes and said, "No, Liu Chen is our guest. He should go back to my house. He also has to learn horse riding at my house and tutor me for homework."

Qiao Xiu stopped doing it, "Sister Minmin, what you said is wrong. Liu Chen was kicked out by your mother. Why are you so embarrassed to let him go back? The people on the grassland can't do such a thing."

Nuomin blushed, he looked at Liu Chen apologetically, and said anxiously, "That's because of a misunderstanding, not my mother's intention. My mother asked me to call Liu Chen back for dinner."

"I didn't come in person and had no sincerity at all. How could Liu Chen go back with you?"

Qiao Xiu grabbed Liu Chen and refused to let go, Nuomin also grabbed his clothes and refused to give in to each other.

Zhang Zheng pulled Liu Chen's arm and felt that this was very strange.

Seeing the two girls talking, he couldn't even get in.

"Sister Xiuxiu, Liu Chen can't go back with you anyway."

"Sister Minmin, Liu Chen came out of your house and got into my car. He was my person. He had to go back with me."

"Why is it yours? Or mine? Just call him and ignore him."

"You shout and see if he ignores you?"

"Liu Chen!" Nuomin whimpered.

"Liu Chen." Qiao Xiu was sweet and greasy.

Professor Zhang was confused and thought to himself, young man, what's going on with you? What are you doing with the two girls?

Looking left and right, the two girls were staring at each other. They stared at each other, which made Liu Chenxiao embarrassed, "Two, don't argue."

Thumb. Ulanya, Nodo, and Noda came over on horseback, but he relieved Liu Chen.

When he saw Liu Chen, Ulanya was embarrassed. When Qiao Xiu saw that the whole family had arrived, he knew something was wrong. He pulled Liu Chen and was about to get in the car.

Wulanya apologized sincerely, but she was a little at a loss.

"Brother, after you left, my mother regrets it very much. Just go back with us."

Noda said.

Nodo also knew that his wife was blaming and feeling sad, and said, "Little brother, our family is sorry for you. Please forgive me. The two children want you to worry more. I, Nodo, remember this kindness in my heart."

Qiao Xiu looked at Liu Chen pitifully, "Go back with me."

Liu Chen smiled and said, "Sister Qiao Xiu, thank you for coming to find me. Nuomin's homework has not been finished yet. I'll go find you for a few days, okay?"

Now that things have come to this point, I can only agree to it, and I feel secretly annoyed.

The two girls finally finished the contest. Professor Zhang rolled his eyes and said with a smile: "Liu Chen, I will go wherever you go. Anyway, I will just take care of the food."

Noda smiled and said, "It's absolutely fine, you can roast the whole lamb."

Liu Chen and Professor Zhang followed him back to the ranch of Nuoduo. Ulanya felt guilty and pleased Liu Chen very much. She insisted on giving up the big bag he lived in for him. She couldn't refuse, so she started to clean up on her own. Liu Chen wanted to refuse, but Nuomin pulled him aside and chatted.

Professor Zhang was so anxious that he didn't care about the intimate conversation between the boy and the woman. He rushed over to be a big light bulb, full of doubts, unstable and unhappy.

"Boy, who are you?"

Nuomin said proudly: "Mr. Professor, Liu Chen is the top scorer in Huizhou Province this year. He was admitted to Jianghai University and tutored the whole class as an undergraduate."

Zhang Zheng waved his hand and said, "I don't care about these. No matter how high a student scores, there is nothing to show off. Liu Chen, I want to know why you understand the series resonant soft switch technology. How much do you know? How much do you know? I urgently need to discuss it with you now."

A student is really nothing special in the eyes of a university professor.

"Professor Zhang, I am very interested in electrical. I taught myself a lot of university content in high school, such as "Power Electronic Technology", "Power Drag and Control Basics", "Control Principles", etc. Oh, it is mainly to better fiddle with electrical equipment and control the motor to make some small models, but theories are just swallowed up."

Tell me a little lie, otherwise a high school graduate would know so much, which would be too shocking.

So that's it, Zhang Zheng nodded.

The little girl next to her completely became a little fan. Nuomin cheered: "Liu Chen, you are so awesome. You even know the knowledge in college. The professors can't compare to you."

In front of the professor, he said, okay? The little girl is so honest.

Zhang Zheng blushed. There was no way. He was indeed better than him. He lost someone in the hospital and didn't care about it. He smiled and said, "Yes, I want to ask for advice, Confucius said, if three people go, there must be my teacher. You little girl, maybe there is something I need to ask for advice."

Nomin said: "I'm very good at riding horses, do you want to learn?"

The professor thought to himself, I just want to give an example, find a step for myself, who really wants to learn what a wild girl on the grassland from you? I am a professor, what will I learn riding a horse?

"Ha, that's not necessary."

"It's very fun, Liu Chen is learning from me. In this regard, I am his teacher."

Ulanya was preparing a sumptuous meal. When she heard her daughter say this, she scolded her with a stern face and said, "Shut up, you speak too big or small, what is riding a horse? Three-year-old children on the grassland can do it. You should respect Teacher Liu Chen and call him teacher without any politeness. How do I teach you in normal times?"

"Teacher Liu Chen, I'm really sorry. Nuomin has been used to being a little bitch and does not know etiquette."

This was so polite that Liu Chen had goose bumps.

"Auntie, it's okay. Nuomin and I are still the same age as me, so it's great to just talk like this."

Nomin stuck out his tongue.

Ulanya still glared at her fiercely. She wanted to study at the beginning. In her era, people were too sacred in their hearts. She lived on the border of the grassland for many years, but her thoughts remained unchanged at all. She had great admiration and respect for intellectuals, especially when the professors came to Liu Chen, it was conceivable how powerful this young man was.

Zhang Zheng couldn't wait to pull Liu Chen down, and Nuomin obediently poured the milk tea, which was full of fragrance.

"Liu Chen, the topology of series resonant soft switches, switches the switch at the zero point of the resonant current crosses the zero point, and the frequency is fixed. It is a discrete method. After the transformer boosts, the output voltage fluctuates too much. Have you ever thought about this problem?"

"Because there are only three modes, the control is too rough, and there will be fluctuations, and there will be too much fluctuations."

"How could it be? If the switching frequency is 10k, I roughly calculate that the fluctuation will be above 5%.

"10k? That's far from enough. The switching frequency of this control mode is at least 100khz or more. The complete elimination of switching losses is for the purpose of high frequency. There is no need to use this structure for the order of 10k frequency."
Chapter completed!