I painted an aircraft carrier on the courtyard house for Dongda University.

Ding Dong!

"The system has detected that the host's continuous efforts to rectify the Jia family's misconduct are highly consistent with the positive energy system's principles, triggering a critical hit reward: "

Energy Points: 10

Theoretical and practical skills in welding technology and engineering, and automatic control (postdoctoral level)

The space now features data analysis capabilities (capable of identifying item materials, age, data, etc.).

1 jin of Da Hong Pao tea from the mother tree

Five sets of premium main and auxiliary ingredients from the entire Tan Family Cuisine series.

Looking at the list of rewards in his mind, Zhou Weiguo couldn't help but mutter "Holy crap."

Welding engineering was his undergraduate major at Harbin Institute of Technology, and automatic control was the area he was going to pursue as a junior PhD at Tsinghua University. The system was directly promoted to postdoctoral level? This surprise came too unexpectedly.

"If the host does not need it, the system can reclaim the reward." The mechanical voice sounded at the right time.

Zhou Weiguo quickly waved his hand: "No, no, no! I don't want to go through the ordeal of studying books again. Those years at Harbin Institute of Technology made my hair turn gray."

"The host is advised to lie down while receiving professional assistance to avoid dizziness."

"Uncle! Uncle, what are you spacing out for?" He Yuzhu's big face suddenly came close to Zhou Weiguo's, startling him.

He composed himself and blurted out, "I was thinking of finding you a wife."

He Yuzhu blushed immediately, unsure of what to do with his hands, and said shyly, "Uncle, then... then we have to find someone pretty, at the very least... at the very least, someone like Qin... like Qin Huairu."

"Smack!" Zhou Weiguo raised his hand and flicked him on the forehead. "Can't you be a little more dignified? Who picks a wife based on other people's looks? I think you deserve a beating!"

He stared at the dumbfounded He Yuzhu, wondering to himself: What kind of girl would be suitable for this silly boy? His gaze swept over He Yushui beside him, and suddenly his eyes lit up: "Little Yushui, do you have a classmate named Yu Haitang?"

He Yushui blinked and nodded: "Yes, Uncle, how do you know her?"

"Regardless of how I know," Zhou Weiguo leaned forward, "doesn't she have an older sister?"

"I think so," He Yushui tilted her head to recall, "The last time I saw her, her sister came to pick her up, and she was very friendly. Haitang said that her sister has always wanted to go to university."

Do you know where she lives?

He Yushui shook her head.

Zhou Weiguo stroked his chin and winked at her: "You don't want to see your brother being completely bewitched by Qin Huairu all the time, do you?"

"Of course not!" He Yushui shook her head vigorously.

"Okay then," Zhou Weiguo lowered his voice, "when she's in school, ask her uncle how old her older sister is and what her family situation is like. Is that alright?"

He Yushui glanced at He Yuzhu, who was still rubbing his forehead, and nodded emphatically: "No problem, Uncle!"

That evening, Zhou Weiguo sent He Yuzhu to the living room and set up a bed with stools and wooden planks. He then went back to his bedroom alone, closed the door, and lay down on the bed.

"Hey, you're here to learn about welding technology and engineering, and automatic control."

In an instant, a flood of knowledge rushed into his mind, and Zhou Weiguo felt dizzy for a moment before "happily" fainting.

When he woke up again, it was already the next morning. He felt that there was nothing wrong with his body, but when he recalled the knowledge in his mind, he was shocked to find that the amount of knowledge was dozens of times more than the total amount of knowledge he had learned in the years at Harbin Institute of Technology.

I got up and walked around the house, only to find that He Yuzhu and He Yushui were not home; they must have gone to school or work.

Since I had nothing to do anyway, I decided to take a walk around the school to check on things. So I pushed my bicycle and headed out, and sure enough, I ran into Yan Fugui, the "gatekeeper," again at the entrance.

"Uncle, are you waiting for the manure cart?" Zhou Weiguo asked speechlessly, then left the courtyard without looking back.

Yan Fugui stared at his retreating figure, muttering in bewilderment, "What kind of manure cart are you waiting for? This college student talks really strangely."

Zhou Weiguo rode his bicycle straight to Tsinghua University. Although he pedaled very fast, it still took him more than half an hour to reach the school gate.

The buildings at Tsinghua University in this era have a retro charm, but no matter how Zhou Weiguo looks at the school gate, it feels quite different from the one in his previous life.

"Comrade, what are you doing?" came a voice from behind.

Zhou Weiguo turned around and saw that they were security guards at the gate. In those days, even security guards carried pistols on their waists.

He stepped forward with a smile: "Hello comrade, I am a freshman this year, from Harbin. I wanted to come and see the school in advance." As he spoke, he handed over his admission certificate.

Upon seeing that it was a student, the security guard became much more enthusiastic. After checking the credentials, he smiled and said, "Comrade, you must have had a long journey! Oh, so you're here to pursue a PhD? However, the teachers and students of the Automation class have all been taken away for an exchange program by the vice principal, so no one is here right now."

Another security guard chimed in, "Wait a minute, isn't Professor Zhang, who's supposed to be teaching, here?"

The security guard slapped his forehead and said, "Right, right, Professor Zhang is here these days. I'll have someone take you there." He then told his colleague to lead a bewildered Zhou Weiguo toward the teaching building.

Soon, they arrived at a Soviet-style office building. "Go in, Professor Zhang's office is the third one on the right," the security guard said.

Zhou thanked him and parked his bicycle outside the building.

He walked straight in. The dimly lit corridor was filled with the unique atmosphere of that era. Even in July, he could still hear sounds coming from the office. He suddenly thought of the rainy days when he was in school and wondered: Did they not have summer vacation in this era?

He raised his hand and knocked on the office door, but no one answered; he knocked again, still no response. He tried to push it gently, and the door clicked open.

"Is Professor Zhang here?" he asked, peeking out.

The professor wasn't in the room, but there was a diagram on the blackboard that looked like an exploded view of an M3 carbine. Zhou Weiguo suddenly remembered that he also had such a thing in his spatial storage. A thought struck him: he hadn't tried the spatial storage's "data analysis function" yet, so why not give it a shot?

He focused his attention on the space, staring intently at an M3 carbine within it.

As you focus your attention, the entire gun seems to be disassembled, with each component and material presented in digitized form before your eyes.

"Holy shit!" he cursed under his breath.

"Young man, who are you? How did you get into my office?" a voice suddenly rang out.

Zhou Weiguo was startled and turned around to see an elderly man in a Zhongshan suit standing behind him—about forty years old, with a young man of similar age beside him, who was curiously looking him over.

"Professor Zhang, I am Zhou Weiguo, a freshman majoring in Automation. I just arrived today. These are my enrollment materials." He quickly handed over his documents.

Professor Zhang carefully examined him, checked his credentials, and said, "Unfortunately, the Automation class teachers and students are all out. I'm just a temporary substitute teacher. You can just call me Professor Zhang."

"Okay, Teacher Zhang," Zhou Weiguo replied.

Professor Zhang asked with a smile, "I noticed you were staring at the M3 carbine blueprints on the blackboard just now, shaking your head and exclaiming in amazement. What insights did you gain?"

Zhou Weiguo was completely stumped by the questions and stammered, "Um... Professor Zhang..."

"It's alright, please feel free to speak," Professor Zhang said gently.

Zhou Weiguo, forced into the task, turned to the blackboard and, using the comparison data of several guns in his spatial storage, added some comments he had seen online in his previous life: "Teacher Zhang, there are a few things wrong with your blueprints. The M3 carbine itself doesn't have a fire selector; only the M2 has one. Most M2 automatic carbines achieve automatic fire by adding accessories to the M1. Also, the M3 receiver should theoretically be the same as the M1's, but there seem to be some problems with this blueprint. But to be honest, I feel the M3 is really not very good. The night vision device drains the battery terribly and keeps malfunctioning. To be precise, this whole series of guns isn't very good."