In less than the time it takes to drink a cup of tea, everyone saw Chai Yushu and several students walk to the tall tower outside the gate.

Hey, over here! Look over here!

Chai Yushu waved from the top of the tower, calling for everyone to look over, but after turning around, everyone faced the sun and could barely open their eyes.

All the onlookers saw Chai Yushu and several students wring out their wet clothes until they were half dry, and then forcefully fling the water vapor outwards.

When four or five people do these actions at the same time, the water mist is quite large. After being refracted by the sunlight, a rainbow instantly forms under the tower.

"Look everyone, it's a rainbow, it's a rainbow..."

Everyone jumped up in excitement; it was simply unbelievable.

It looked exactly like a natural rainbow in the sky, except that the rainbow disappeared only after they took their clothes back and the mist dissipated.

Yan Qimeng clenched her fists and pouted. They were imitating the rainbow appearing after the rain.

"Kid, are you convinced now? We all saw the rainbow. It's a draw today, shouldn't we call it a day?"

Someone at the scene said that they also knew when to stop while they were ahead.

Yan Qimeng turned her head towards Yan Chuan, realizing that she had finally met her match.

"The rainbow you created vanishes in an instant. I don't want the rainbow to disappear when the mist goes away. If you can't create a colorful rainbow that stays here, you haven't won this round."

Yan Chuan had long anticipated that the people who came to challenge him today wouldn't be so easily dealt with. When Chai Yushu and the others came down, they were carrying a bronze mirror.

Everyone looked at each other in bewilderment; this person who challenged them was deliberately making things difficult for them.

"Please wait a moment!"

Yan Chuan took the bronze mirror from Chai Yushu and, in front of everyone, cut it into three pieces with a knife, then reassembled them into a rhombus shape.

When sunlight shines on the bronze mirror, the gate of the Imperial College is reflected by the mirror, creating a colorful rainbow that never fades.

“Young master, as long as the sun doesn’t set, this rainbow will never disappear. Whether you want to see it in the morning, at noon, or in the afternoon, it will always be there.”

"Wow! Yanchuan, so that's how you used the bronze mirror when you asked me to bring it over. Yanchuan, you truly are a literary star descended to earth, you know everything."

Yan Qimeng was naturally unhappy that her plan had failed, but she sincerely admired the person in front of her, both for his strength and intelligence.

"How about that? We all said the Imperial Academy wouldn't be defeated so easily. Kid, go back and learn more about our Imperial Academy before you come and challenge us."

The Imperial Academy's reputation was finally preserved, and it did not fail to live up to the name of the emperor's academy.

Yan Qimeng originally thought that no one would do something so difficult, but she didn't expect him to do it so easily, as if he had done it many times before.

"How...did you do that?" Yan Qimeng couldn't help but ask Yan Chuan out of curiosity.

"This is just a phenomenon. Once you understand the principle, it's not difficult to replicate."

Xie Zhiyong walked up behind Yan Qimeng, his face looking very bad. He had lost to a scholar in the martial arts competition today, and he would definitely be ridiculed by the people in the military camp when he returned, but he couldn't do anything to Yan Chuan.

"Failed today, I'm leaving," Xie Zhiyong said.

Yan Qimeng looked at everyone with resentment. Since she couldn't challenge them today, she had to think of another way.

"Hey, who are you? What's your name? I've lost to you today, so I'd better know who you are, or I'll be satisfied."

Yan Chuan never intended to conceal his identity when he arrived in the capital.

Chao Yan and Qi Meng bowed respectfully; the elegant young man was as graceful as the bright moon and gentle breeze.

"I am Chen Yanchuan, the heir of the Prince Yu's mansion..."

"Prince Yu's Mansion?"

It turned out to be the son of Prince Yu and the current Deputy Minister of Agriculture. Yan Qimeng remembered that a long time ago, Prince Yu stopped leading troops, and the Deputy Minister of Agriculture had never appeared in the capital again.

There has been no news of them for many years. It seems that after the defeat of the Northern Liang army, the two returned to their hometown. Although the Prince Yu's mansion in the capital is still there, it is only managed by the steward.

She was taken aback when this person claimed to be the son of Prince Yu.

"Are you the heir of the Prince Yu's mansion?"

Upon hearing this identity, Xie Zhiyong's initial resentment turned into excitement.

"So you are the son of Prince Yu. No wonder your martial arts are so good. I admit defeat. We've become friends through this fight. My name is Xie Zhiyong. I'll find a chance to spar with you again in the future."

Yan Chuan nodded: "I'm ready anytime!"

Yan Qimeng looked at Yan Chuan, who was about the same age as her, with a hint of shyness hidden in her eyes. She put her hands on her hips and looked up at Yan Chuan.

"Your Highness Chen Yanchuan, the heir of the Prince Yu's mansion, right? I'll remember you. Let's go..."

Today's events have finally come to an end, and Yan Chuan doesn't dwell on them too much, only wanting to go back and continue his studies.

But things didn't go as planned. Today he was the center of attention, and everyone in the Imperial College surrounded him, wondering how he knew how to create a rainbow.

Chai Yushu, in particular, was so excited that he wanted to dig out Yan Chuan's brain to see what was inside.

"Yanchuan, what is the principle of rainbows that you just mentioned? Why don't we know it after studying it for so long? Tell us quickly!"

And also, was your martial arts taught by Prince Yu? When did you start practicing martial arts?

Yan Chuan looked at them; if they didn't get an answer today, they probably wouldn't leave.

"With so many questions from you all, which one should I answer first?"

Everyone: "Whatever, either one is fine."

Yan Chuan sat up straight and explained to everyone one by one: "The principle of rainbows is actually very simple; it just utilizes light..."

Yan Chuan explained the principles his mother had taught him: the seven colors of a rainbow are originally the colors of light, and their appearance is simply due to the reflection of water droplets.

The principle of reflection using a rhombus mirror is the same, nothing special.

...

When Yan Qimeng returned home, she ran into Prime Minister Yan as soon as she entered the door. She was caught red-handed dressed in men's clothing.

Prime Minister Yan exuded official authority and dignity, his face was extremely dark, and his tone was filled with extreme anger.

"Guards, take the young lady to the ancestral hall and make her kneel down!"

Yan Qimeng knew she would be punished for what she did today, but she didn't expect the punishment to come so quickly.

Inside the ancestral hall, Prime Minister Yan held a ruler in his hand, his heart filled with rage.

"Yan Qimeng, hand over the items."

Yan Qimeng took out the Prime Minister's token from her person and handed it to her father. Then she stretched out her hand, waiting for the punishment of the ruler.

"Yan Qimeng, Yan Qimeng, how old are you? As the legitimate daughter of the Prime Minister, how dare you steal the Prime Minister's token and cause trouble at the Imperial Academy?"

"If it weren't for the tutor from the Imperial Academy coming to report me, I wouldn't have known you had such audacity."

After saying that, a ruler struck Yan Qimeng's palm, making her wince in pain, but the determination in her eyes remained unaffected.

"You dare to use my token to threaten the teachers of the Imperial Academy, and you even dare to challenge them. Do you know that the Imperial Academy is the face of His Majesty?"

Have you considered your sister's situation? As the Empress, how difficult it must be for her.

"A woman so ungrateful! You shall kneel here today and shall never leave the manor again!"