Me, wash my hair upside down!

That afternoon.

Liu Erlong, Yu Xiaogang, Flender, and Zhao Wuji arrived in Spirit City together in their public identities.

The four of them, without any disguise and dressed in neat Shrek Academy uniforms, walked openly into the Douluo Game Hall.

The lobby on the first floor was, as usual, packed with people.

People were crowded in front of the Fruit Machine, there was a queue in front of the Blind Box Wall, and a group of onlookers stood around the Claw Machine.

Liu Erlong led Yu Xiaogang, Flender, and Zhao Wuji straight up to the second floor.

Qin Chuan was already waiting in the lounge.

He sat in a chair, legs crossed, holding a cup of tea. Seeing the four people come up, he stood up and smiled.

"Principal Liu, everyone has arrived."

Liu Erlong, with a serious expression, spoke first, "Qin Chuan, we at Shrek Academy have long had a unified rule: the opening of a branch academy requires the unanimous agreement of all four of us before it can be implemented. Not one of us can be missing."

Qin Chuan raised an eyebrow and nodded slightly. "That makes sense. Then let everyone express their opinions one by one today."

Without hesitation, Liu Erlong was the first to declare, "I agree to open Shrek Branch Hall."

The scene fell silent instantly, before Flender, Yu Xiaogang, and Zhao Wuji could utter a word.

Yu Xiaogang didn't rush to express his opinion. Instead, he took out the paper full of difficult questions from his sleeve and placed it on the table.

"Did you create these three questions?"

"Yes."

"I haven't solved a single problem all morning." Yu Xiaogang's tone was calm, without shame or anger, simply stating a fact, "I've searched through every ancient book I could find, and there's no record of it."

Qin Chuan nodded.

"So I want to see if you can solve them." Yu Xiaogang stared into Qin Chuan's eyes. "If you can solve any of them, I'll reconsider opening a branch."

Qin Chuan put down his teacup and walked to the table.

He picked up the paper and glanced at the first question.

Given a right triangle with legs of length three and four, find the length of the hypotenuse.

Qin Chuan took a pen and a blank sheet of paper from the table.

He first drew a right triangle and labeled it with three and four.

Then he wrote a line of text next to it.

Pythagorean Theorem: In a right triangle, the sum of the squares of the two legs is equal to the square of the hypotenuse.

Yu Xiaogang leaned closer to take a look.

Qin Chuan put down his pen and pushed the paper in front of Yu Xiaogang.

Yu Xiaogang stared intently at the derivation process on the paper, reading it word by word.

His finger lingered on the words "Pythagorean Theorem" for a long time.

The sum of the squares of the two legs of a right triangle is equal to the square of the hypotenuse.

It's that simple.

He spent the entire morning studying this simple pattern but couldn't find it.

He picked up the rope and measured "about five inches," and it was indeed five. Not about, it was exactly five.

Yu Xiaogang's hand trembled slightly.

He looked up at Qin Chuan.

"How did you come to know this theorem?"

Qin Chuan smiled and said, "It's the way of Heaven, the principle of nature. The relationship between the two sides and the hypotenuse of a right angle is inherently like this. It's just that no one had summarized it before."

Yu Xiaogang looked down at the formulas on the paper again.

He checked it in his mind.

A perfect match.

He thought of another set of numbers: six and eight. Six times six is thirty-six, eight times eight is sixty-four, thirty-six plus sixty-four is one hundred, ten times ten is one hundred. The hypotenuse is ten.

He measured it with the rope.

It is ten.

Yu Xiaogang's finger moved slowly across the paper, tracing the line of formula.

Something was changing in his eyes.

Flender stood to the side, watching Yu Xiaogang's expression, and sighed inwardly.

He has known Yu Xiaogang for over twenty years, and Yu's greatest weakness is his thirst for knowledge.

You can threaten him with force or oppress him with power, but he will not bow down.

But if you present him with a theoretical system he has never seen before, he will be completely captivated.

Yu Xiaogang raised his head and looked at Qin Chuan.

What about the second and third questions?

Qin Chuan shook his head. "The agreement is that we only need to solve one. We can talk about the remaining two later."

Yu Xiaogang opened his mouth, as if to say something, but then swallowed it back.

He looked down at the paper, folded it neatly, and tucked it into his sleeve.

Completely impressed by Qin Chuan's new knowledge system, Yu Xiaogang solemnly declared, "I agree to open Shrek Branch Hall."

Liu Erlong's lips curled up slightly.

Then, Flender's eyes flickered, and he spoke pragmatically, "I have no other demands. As long as you can triple our Shrek's current profits, I'm open to discussing the branch opening and will fully cooperate."

Qin Chuan immediately agreed, "Triple the profit, easy."

Only Zhao Wuji, standing to the side, frowned and shook his head in a deep voice. "I disagree. The Game Hall is rife with problems, which can easily disturb the students' minds; the disadvantages outweigh the advantages."

Qin Chuan looked at the burly Zhao Wuji and said with a half-smile, "Since Teacher Zhao insists on opposing, let's make a bet."

How do we bet?

"If you can outlast me for the time it takes for an incense stick to burn, I will drop the matter of the branch and proceed entirely according to your wishes. If you cannot, you will unconditionally agree to open the branch, how about that?"

Zhao Wuji's Soul Power stirred slightly. Confident that his strength far surpassed Qin Chuan's, he immediately and firmly agreed, "It's a deal!"

It's a deal!

To ensure a fair viewing experience, Qin Chuan specially invited Chrysanthemum Douluo and Ghost Douluo, who were residing in Spirit City, to come to the Spirit City Martial Arts Arena to serve as witnesses.

Not long after.

The group arrived at the Martial Arts Arena in a grand procession, and the area was instantly surrounded by spectators, including Hu Liena, Xie Yue, Zhu Zhuqing, and Xiao Wu.

Qin Chuan and Zhao Wuji stepped onto the arena one after the other and stood facing each other.

On the arena, Zhao Wuji was the first to unleash his Soul Power, and a powerful aura swept across the entire arena. His muscles bulged, exuding a strong sense of power.

Qin Chuan knew that his opponent's physical strength and power far surpassed his own, and that a direct confrontation would definitely put him at a disadvantage. Therefore, he avoided direct confrontation and instead dodged and maneuvered throughout the entire fight.

After a few brief exchanges, Qin Chuan found an opening and his third Soul Ring suddenly lit up!

Third Soul Skill: Truth or Dare!

A golden light barrier instantly enveloped the entire arena, firmly locking onto Zhao Wuji!

"Choose one: answer Truth-Telling with no penalty, or accept the penalty according to the specified rules in the dare."

Zhao Wuji's expression changed. Knowing that telling the Truth-Telling would easily reveal his true thoughts, he immediately made his choice. "I choose dare!"

Seeing this, Qin Chuan smiled knowingly, "I knew you would choose this."

Then, the punishment for the dare was announced loudly, "The punishment for this round is that you must wash your hair upside down on the spot within the time it takes for an incense stick to burn, and then walk off the stage upside down."

The moment the words were spoken, the invisible rules took effect!

Zhao Wuji's body was out of control; his feet were off the ground, and he was forcibly turned into an upside-down position by the rules, his hands supporting him on the ground, unable to move an inch.

The crowd below the stage erupted in uproar, Chrysanthemum Douluo suppressed a laugh, his eyes filled with mockery.

Ghost Douluo was very savvy. He silently turned around, brought over a bucket of water, and placed it directly on the arena, below Zhao Wuji's head.

Helpless, Zhao Wuji could only remain upside down, humiliated, and bury his head in the water to diligently complete the hair washing process.

The audience could no longer contain themselves and burst into laughter.

Laughter rose and fell, echoing throughout the entire Martial Arts Arena.

Only Yu Xiaogang remained, his brow furrowed, completely absorbed in the new knowledge system of the Pythagorean Theorem, ignoring the farce around him, his mind constantly deducing formulas and verifying patterns.

A few moments later, the hair washing was finished.

Bound by the absolute rules, Zhao Wuji remained upside down throughout, slowly moving step by step, and forcefully walked off the stage upside down.

Before the time limit of one incense stick had been reached, the punishment was successfully completed.

Qin Chuan wins decisively!

After landing, Zhao Wuji was filled with humiliation and had lost face, but he was still unconvinced. "Qin Chuan, you have no martial ethics!"

Qin Chuan laughed, "I don't have martial ethics? Zhao Wuji, I've already shown you face by not letting you plow the ground with your head on the stage."

"Ah, plow the field with your head?" Zhao Wuji thought for a moment, then sighed. "Fine. I lose. I unconditionally agree to the opening of the Shrek Branch Hall."

Plowing the ground with your head could cause serious injury, so it's not included in the Grand Adventure project.

Qin Chuan only said that to scare the other party.

With this, all four members reached a consensus, and there were no further obstacles to opening the branch.

The car door opened, and a person stepped out.

Flender' ears lit up when he heard this. He felt that nothing was more important than income.

"Okay." The four nodded in unison.