Luo Yu looked at the time displayed on the system panel again, 14:10.

The clock tower's time has been set up!

[The exam time is up, the paper will be handed in automatically, the answer rate after the test: 1%, this task failed, do you want to read the file? 】

This sudden failure made Luo Yu and others look at each other in dismay.

For a while, everyone's face became gloomy. Looking at the students in the exam room, Luo Yu pondered for a while and then chose to read the file.

A ray of light flickered in front of him, Luo Yu and his friends returned to the empty Yucai Building again.

The time went back to nine o'clock the night before.

Nake'er stomped her feet and said, "Damn, there is someone in the clock tower, let's kill him!"

"Optimus Prime!"

Luo Yu agreed, Optimus Prime appeared in the sky and flew towards the clock tower, but was blocked by an invisible light curtain just as he approached.

[Hint: All items cannot be near the clock tower]

"what?"

Everyone was stunned, not surprised because of the air wall, but reminded that everything should not be approached, including school students and teachers.

Fang Yumeng said hesitantly: "The first two exams were normal, and no one was approaching, how could the big bell suddenly break?"

"This dungeon is too difficult." Anna sighed softly: "There was no omen before the failure. We all paid hundreds of thousands of file reading fees. Which idiot designed this dungeon?"

"Husband, do you know why the copy is so difficult?"

"This...hahaha, maybe it's difficult."

Luo Yu laughed dryly and said sternly, "Go back to the room first and then talk."

Elena said with some emotion on her face: "Do you still eat hot pot like yesterday?"

Alice chuckled: "You can try different flavors this time."

In the middle of the night, everything is silent.

Anna and the others were asleep, while Luo Yu and Fang Yumeng left the dormitory together and came to the playground under the clock tower.

After some investigation, they did find that the clock tower could not be entered from any angle, and there was nothing special nearby. Fang Yumeng hesitated: "Husband, should we try to forcibly bombard the air wall?"

"Should be useless."

Luo Yu patted the transparent wall in front of him and pondered: "This time the copy is different from what we usually experience, there must be some dark lines."

"I noticed that the key figures in the previous examination room repeatedly mentioned the word principal. Will the key to unlock the clock tower lie on the principal."

"Principal...you said that, I remembered it too. Everyone seems to say that he hasn't come to school for a long time..."

Fang Yumeng was thinking while talking, and suddenly wanted to understand something, and suddenly said: "Understood, the key to this level is to find the principal, no one in the school knows where the principal is, maybe he was kidnapped by some boss. !"

"The location is definitely still within the school, and what we need to do is to collect clues about this as soon as possible."

Luo Yu smiled lightly: "This is also a way of thinking. Let's do it. Tomorrow we will be divided into two groups. You and Anna and the others will ask the school personnel to find clues. Let me see if there are other possibilities."

"it is good!"

The two finished their discussions and just waited for the sun to go up the mountain.

In the early morning, everyone started to act early, and Luo Yu was walking around the campus alone looking for clues.

He always felt that it was not so simple. The description of the air wall surrounding the clock tower was very clear. No creature could enter the clock tower, so how did the other party adjust the time?

"Where is the secret?"

Walking slowly along the sparkling stream, Luo Yu's eyes inadvertently plunged into the water.

The stream is clear, and occasionally groups of small fish swim happily in the water. As the small fish swim, layers of ripples appear in the stream. Under the refraction of the sun, it is like a circle of light ribbons. Light diffusion, quite beautiful.

"Ribbons?"

"The reflection of the sun in the stream, will it be colorful?"

A strange look appeared in Luo Yu's eyes. He took a few steps forward and crouched by the stream under the shade of green to observe carefully.

Behind him, a few girls from the high school group followed in the distance. They all blushed slightly, as if they wanted to come up to talk but didn't dare.

Luo Yu noticed them before, not only these girls, but also the boys in the high school group would peek at Anna and them with blushing faces.

"The high school group has the largest number of people and seems to have the most emotions."

Luo Yu gave them a definition and then focused all of their attention on the stream.

After observing for a while, he noticed an anomaly.

The rippling ribbons are not simply reflecting sunlight, but because there are pebbles with extremely fast colors on the bottom of the water, and these stones make the water surface so beautiful under the reflection of sunlight.

Putting his hand into the water, Luo Yu wanted to take a piece and look at it, but the moment he held the pebble, he was slightly taken aback.

With his strength, he couldn't even hold it!

"This……"

He strengthened his arm strength again, but no matter how hard he tried, the pebble seemed to have been born under water and remained motionless.

Luo Yu has the power of 9999, this situation makes him not surprised but happy, maybe the clue is here.

He turned around and took out the multicolored spear, and the tip of the spear accurately pierced into the cobblestone.

"Ding!"

With a crisp sound, the multicolored spear was directly bounced back, and the cobblestone was indestructible!

"There is such a thing!"

The multicolored spear attacked again, but the pebbles next to it shattered in response, but it was incredible that the shattered pebbles quickly returned to their original shape under the impact of the water.

[Hint: You cannot destroy the environment here by normal means]

protection mechanism!

However, unlike the usual protection mechanism, the prompt says that it cannot be destroyed by normal means, and it cannot be destroyed without a fixed death.

Luo Yu's eyes flickered, even if it wasn't a clue to the third exam room, it was definitely a hidden mystery.

At this moment, there was a soft cry behind him, and he turned his head to see that it was a girl who had been pushed out of the tree by the rest of her companions.

"Go on! Don't you like the teacher, give it to him!"

"Jiang Xiaoshu, hurry up, or you will be taken away!"

"You are the principal's granddaughter, and the student council president that everyone admires! Where's your previous spirit?!"

The girls seemed to be encouraging the girl, and the short-haired girl named Jiang Xiaoshu snorted softly at them, but when she noticed Luo Yu's eyes were looking at her, she trembled slightly and blushed.

Taking a few deep breaths, Jiang Xiaoshu seemed to cheer herself up. She quickly stepped forward, slightly trembling, took out a letter from the pocket of her school uniform skirt, stuffed it into Luo Yu's arms, then turned and ran!

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