At seven o'clock in the evening, Tsinghua lecture hall.

When Cao Haoran pulled Cao An to come, there were not many students inside, and the seats were about half of them, but although there were not many people, Cao Haoran still chose to sit in the back and several rows away from the students in front of him, he always felt that although he came to Tsinghua and walked into Tsinghua's classroom, he was still incompatible with here, and he and the people here still belonged to two worlds.

He didn't even know what class was being taught in this classroom today, he just wanted to listen and wonder what the atmosphere of the university classroom was like.

At the beginning of the seven-fifteenth class, half of the students in the lecture hall sat in the front and basically all sat forward, Cao Haoran turned his head and looked around, and his heart chuckled slightly, he deliberately chose the position in the back, but he didn't expect that only the two of them sat in the back, so it was more conspicuous.

The class is a very thin and not tall little old man, looking very inconspicuous, but from the fact that after he entered the classroom, all the students automatically stood up and bent down to salute, this little old man seems to be quite respected by the students, the little old man waved his hand at the students to signal everyone to sit down, and only one book was clamped on his arm and walked on the podium, the little old man leaned his shoulders and his voice was very loud, and his tone was low so that the students in the entire large lecture hall could hear it clearly.

"In this big class, we continue to explain environmental science architecture, and continue to talk about the content of the previous class, the history of ancient Chinese architecture can be traced back to thousands of years ago, the history is extremely long, and each dynasty of the twenty-four dynasties has its own characteristics, even if it is similar to the two dynasties, it is basically the same when it comes to the discipline of environmental building science, I think there should be someone in ancient China who began to study, but in ancient times, people called environmental architecture science Feng Shui architecture, in ancient China, small to the common people, to the princes, nobles, and even emperors, Feng Shui will be included in the construction of the residence, starting from the selection of the foundation to the final finish, basically all of them are inseparable from Feng Shui, "The little old man put his hands on the podium, his eyes drooped in the textbook, and began to explain by himself.

Cao Haoran is completely in a state of listening to thunder, he can understand what the old man said, but he doesn't understand what it means at all, but he listens to it with relish, not for anything else, just to feel the atmosphere.

And Cao An beside him is still drooling at the corners of his mouth, but it is slightly different from his usual state that the expression on Cao An's face sitting in the classroom will change slightly when the little old man narrates, and it is no longer in that stupid state, but it is a pity that Cao Haoran next to him is completely immersed in his own world and has not noticed the unusual change of his brother An.

After fifty minutes of class, the class ended, and the students in front began to run out, and Cao Haoran didn't seem to react and sat there without moving, and after a while, the old man in class also came over, and he looked back in surprise when he passed Cao Haoran and Cao An.

"First time coming to my class? Looking at the eyes, there was no elective before? ”

Cao Haoran stood up nervously, and stammered, "What, no, uh, it's the first time I've come, yes, it's the first time."

Cao Haoran was a little sweaty on his forehead, and his heart was weak, although his father told him that as a security guard at Tsinghua University, he could enter the Tsinghua classroom when he was not in class, but he was still a little nervous when he entered the classroom for the first time.

"Well, okay, remember to bring a notebook and pen with you next time you go to class, even if it's pretending to be you, you have to pretend, right?" The little old man suddenly grinned, and then his eyes fell on Cao An who was sitting on the chair, and he was even more surprised, "He's not a student, is he?" ”

The corners of Cao An's mouth twitched like this, naturally anyone could see that he couldn't have been admitted to Tsinghua University, he should be regarded as a soy sauce player.

"Hmph" Cao Haoran's face turned white, and said, "Eh, no, no, he followed me to audit, that, he is very honest and honest"

The little old man frowned but didn't say anything, nodded his head and walked away with his hands behind his back.

"You, what you just said is not right" Suddenly, Cao An stood up and sobbed his mouth and burst out a sentence behind him.

"I'll rub, big brother," Cao Haoran was suddenly stunned, pulled Cao An and said, "Brother An, quiet, quiet, do you understand?" ”

"Huh?" After the little old man walked a few steps, he paused, turned his head to look at Cao An, pointed to his nose with a confused expression, and said, "You said that what I just said is not right?" ”

"Ah, no, it's wrong" Cao An shook his head.

"That, teacher, teacher, don't listen to his nonsense, he doesn't understand anything, he's a fool, he just talks nonsense" Cao Haoran was about to cry, and he was suddenly at a loss for nervousness.

The old man turned around and came back with his hands behind his back, looked at Cao An at a few o'clock and asked, "What's wrong, tell me about it?"

Cao Haoran was already a little miserable.

"In the harem of ancient emperors, the lack of four corners of the house is not for people to live in, the house has no four corners for the murderous house can lead the yin soul into it, in ancient times, there were many unjust souls in the backyard of the deep palace, concubines and eunuchs, guards and maids, there were many in every dynasty, these people died in the palace and the souls had nowhere to go, so they built a house with no four corners in the backyard of the deep palace, just to gather those dead souls so as not to harm other people in the palace"

The little old man Mu Ran was stunned for a moment, and seemed to want to open his mouth to refute, but was frightened by the words of the stupid person in front of him, Cao Haoran asked in a daze at this time: "Brother An, why are you saying this so neatly?" ”

Most of the time, normal people can't understand Cao An's words, his mouth is not clear, and his tongue is knotted when he speaks, but when he first came to Cao An, what he said was too slippery, just like normal people.

Cao An blinked blankly, shook his head and said, "No, I don't know."

"Hey, it's back to the same way it was" Cao Haoran sighed, turned his head and licked his smiling face and said, "That teacher, don't be like him, his head is not very good, you can see it, right?" ”

"Well, it's okay" The little old man didn't seem to care, and then suddenly said, "I'm still here for class tomorrow night, you can come back at this point, oh yes, bring him with you."

"Hey, good lak, good lak" Cao Haoran nodded hurriedly, a little false alarm.

The little old man looked at Cao An suspiciously with his hands behind his back and left the classroom, Cao Haoran exhaled and wiped his cold sweat and said, "Brother An, you can really surprise me, this old man is easy to talk to, otherwise you can poke the basket for me."

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