Sky Curtain: With a vermilion mirror, Jing travels through the modern world, shaking all dynasties.

Lin Xiaoyu was so busy explaining astronomy to the little princess that Jiang Chuan's class had already started.

She quickly said, "Jingjing, your brother's class has started, let's hurry over!"

Zhu Jingjing nodded. Although the astronomical observatory was very interesting, she also wanted to see what Jiang Chuan's formal lectures would be like.

In a classroom on the first floor of the second teaching building at Yenching University.

Jiang Chuan stood in front of the podium and passionately explained military industry knowledge to the students.

Suddenly, the back door of the classroom opened, causing him to frown slightly.

Even if he has the best temper, he would lose his temper if he only arrived late for class when the class was almost over!

"Excuse me, wait a minute..." Jiang Chuan was about to call the person over to give a lecture when he found two familiar figures pushing open the door.

"Director Jiang, is there something you need?" Lin Xiaoyu asked.

"It's alright, quickly find a seat." Jiang Chuan immediately lost his temper; he couldn't afford to offend either of these two!

If the young princess gets angry and goes to Zhao Xueyun to complain, then regardless of who is right or wrong, it will become her fault.

Lin Xiaoyu wouldn't complain, but this guy is eloquent and can turn black into white!

Jiang Chuan had suffered many losses in the past, and finally came to the conclusion that a good man doesn't fight with a woman!

Seeing the two people who had taken their seats staring straight at him, Jiang Chuan felt a little awkward. Being seen lecturing by acquaintances made him feel inexplicably uncomfortable.

He quickly added, "get out of class will be over in a few minutes. Let's watch a military exercise video together to see how modern weapons are used on the battlefield."

Fortunately, the class was about to end, and everything that needed to be covered had been covered. I could just watch a video to get through it.

On the screen is a fully armed modern tank, a steel monster moving at high speed, yet surprisingly quiet.

"This is our Dragon Kingdom's fourth-generation main battle tank, the Type 100 tank." Accompanying the video, Jiang Chuan explained from the side, "The Type 100 tank is completely different from the traditional tanks of the past that relied on thick armor and large-caliber main guns. Its onboard panoramic helmet display system, combined with auxiliary algorithms, can manage multiple drones and unmanned combat vehicles to carry out coordinated operations at the same time. It has transformed from the original combat unit into an intelligent terminal that integrates offense and defense."

Zhu Jingjing was dumbfounded. She couldn't imagine the destructive power such a steel monster would have on the battlefield!

As the smoke from the cannon barrel flashed, the scene suddenly switched to the air, where dozens of drones, in coordination with the previous artillery barrage, simultaneously attacked the target.

After the smoke and dust cleared, the fortress that had been targeted was reduced to pieces of rubble under the bombardment!

Xuchang during the Three Kingdoms period.

Cao Cao gazed at the sturdy city walls in the distance, wondering, "I wonder if the walls of my Xuchang can withstand the force of that attack?"

Xun Yu pondered for a moment, then stepped forward and said, "Prime Minister, please forgive my bluntness, but even if the walls of Xuchang were doubled in thickness, I'm afraid it would still be difficult to stop them."

Cao Cao sighed deeply and said, "If any other warlord were to create such a thing, I fear my days are numbered!"

Upon hearing this, Guo Jia quickly advised, "Prime Minister, do not worry. How can such divine objects be created so easily?"

"What Fengxiao said is absolutely right. I was overthinking it!" Cao Cao's expression softened, and he felt somewhat at ease.

The Great Han Dynasty, Weiyang Palace.

"If such divine artifacts could be put to use by our great Han Dynasty, then pacifying the Xiongnu would be as easy as turning one's hand!" Liu Che exclaimed, gazing at the ruins beneath the cannon fire.

"Your Majesty, even without it, I am confident I can annihilate the Xiongnu!" Wei Qing stepped forward, clasped his hands in a fist salute, and said, "Just give me eight hundred elite cavalry, and I will surely bring down the head of the Xiongnu Chanyu and present it to Your Majesty!"

Not to be outdone, Huo Qubing stepped forward and said, "Your Majesty, my uncle is getting old. Let this young man, Huo Qubing, take charge of pacifying the Xiongnu!"

Liu Che clapped his hands and laughed, saying, "To have two generals like you is truly a blessing for our Han Dynasty! Next spring, after our army has recovered and grown strong, you two will each lead an elite cavalry force and must utterly crush the Xiongnu!"

The Great Ming Dynasty, Fengtian Hall.

Zhu Yuanzhang summoned Xu Da and asked, "What do you think of the power of those cannons? How do they compare to the power of my Great Ming?"

Xu Da replied, "Your Majesty, please forgive my bluntness, but the firearms and cannons used by our army are incomparable to the power displayed in the sky!"

Zhu Yuanzhang nodded. He and Xu Da shared the same view: even if all the firearms of the Ming Dynasty fired in a single volley, they probably wouldn't have such destructive power.

"Issue my decree!" Zhu Yuanzhang waved his sleeve and ordered, "The Bureau of Precious Materials, the Bureau of Ordnance, and the Bureau of Weapons are to devote all their efforts to the research and improvement of firearms. Although they may not be as advanced as those of later generations, they must be the best of our time!"

Modern Yenching University.

"Lin Xiaoyu! Weren't you going to take Jingjing around? Why did you bring her to the classroom?" Jiang Chuan immediately questioned her after the class ended.

"Jingjing wants to watch your class, what, you won't allow it?" Lin Xiaoyu winked at Zhu Jingjing. "It's not like anyone cares about listening to your class! If Jingjing didn't want to watch, I wouldn't be here!"

Jiang Chuan glanced at Zhu Jingjing, sighed helplessly, and said, "Jingjing, my class is over. Where would you like to go next? How about I take you?"

Before the little princess could answer, Lin Xiaoyu couldn't stand it anymore. "Jiang Chuan, what do you mean by that? Are you saying I'm in your way and want to send me back?"

Jiang Chuan shook his head and said, "I was just worried you might have other things to do! I'll show Jingjing around from now on, you just go about your own business!"

Lin Xiaoyu frowned slightly, then had a sudden inspiration. Although Jiang Chuan was determined to get rid of her, he couldn't do anything if Zhu Jingjing disagreed!

"Jingjing, would you like to check out some university club activities?" Lin Xiaoyu gave Jiang Chuan a provocative look and said, "I'm very familiar with the student council members. Just a word with them and I can visit any club I want. Your brother doesn't have that kind of influence!"

Jiang Chuan was taken aback. In terms of interpersonal relationships, he really couldn't compare to Lin Xiaoyu.

"Brother, let Xiaoyu come along," Zhu Jingjing gently shook Jiang Chuan's arm, pleading, "Xiaoyu just took me to visit the astronomical observatory, it was really interesting!"

Jiang Chuan sighed helplessly. Lin Xiaoyu really had a knack for winning over the little princess.

"Alright then." He had no choice but to compromise.

Lin Xiaoyu took out her phone, fiddled with it for a while, and said, "The music club is rehearsing right now, let's go check it out!"

Jiang Chuan is tone-deaf and knows nothing about musical instruments, so he doesn't know if the little princess has any interest in music.

He quickly asked, "Jingjing, do you like music?"

Zhu Jingjing nodded repeatedly, "Of course I like it! My father even had someone teach me to play the flute! Although I'm not very good at it, it's quite fun!"

Jiang Chuan's face darkened, realizing he was in trouble!

Lin Xiaoyu was present; wouldn't the little princess's words expose her identity as a time traveler?