The second floor is the gravity testing center, with a sandbag-like object hanging from the ceiling.

The staff explained to everyone, "This device mainly relies on the mass of the sandbag and the speed at which it falls to the ground to test gravity. Are there any children who know the formula for calculating gravity?"

A group of primary school students don’t even know what gravity is, let alone know the formula for calculating gravity.

Suddenly a voice came from the crowd, "G=mg."

Everyone looked in the direction of the voice and found it was the usually taciturn Zhan Nanqi.

Several female classmates looked at him with stars in their eyes.

The staff immediately applauded, "Yes, very well said. So what is g?"

Zhan Nanqi was about to continue answering when Xue Jiayu answered, "The acceleration of gravity."

"Wow! There are so many hidden talents in your class. The two students who just answered, please stand up. I have a gift for you."

After Xue Jiayu and Zhan Nanqi stepped forward, the staff handed them two smoky gray badges.

"This is a limited edition badge issued by our science and technology museum. We originally planned to give it to lucky citizens when it was open to the public, but today I decided to give it to you to reward you for your interest in physics."

"Wow--"

Others gathered around to look at the two badges. They were very envious of them because they were so exquisite and cute.

"Oh my god, we want that too."

"Yes, uncle, I want it too."

"Sorry. Uncle only has this pair."

The staff member spread his hands helplessly and said, "If you like it, please answer more questions during the rest of the visit. Maybe you will get a badge too."

"Okay! Then I must!"

Xue Jiayu and Zhan Nanqi each got one, and she said happily, "Brother Nanqi, look, this badge is so beautiful."

"kindness."

Zhan Nanqi smiled rarely and carefully put away the badge.

Xue Huanyu pursed her lips and waited until she took a break to go to the bathroom. She whispered to Xue Jiayu, "Sister, I think your badge is so beautiful. Can you give it to me?"

Her sister was usually willing to give her everything, so she believed that she would definitely give her the badge as long as she asked.

However, to her surprise, Xue Jiayu looked embarrassed and said, "I want to keep it for myself."

Xue Huanyu's smile suddenly couldn't hold back.

"Why? Sister, didn't you say that you would give me whatever I wanted?"

"Xiaoyu, if you want something else I can give it to you. But I like this badge very much, I——"

Xue Jiayu wanted to persuade him with emotion and reason, but Xue Huanyu went into a cubicle in a huff.

"If you don't want to give it to me, then I won't give it to you!"

Xue Jiayu originally wanted to wait for Xue Huanyu to come out and comfort her sister, but after Xue Huanyu came out, the teacher urged everyone to gather, so Xue Jiayu had to give up and thought of coaxing her after returning.

Back in the team, Xue Huanyu and Gu Yuan switched positions. She stood in front of Zhan Nanqi, and Gu Yuan stood between Xue Jiayu and Zhan Nanqi.

Gu Yuan didn't want to change, but Xue Huanyu pouted and looked like "I'll be unhappy if you don't change". Gu Yuan thought it was better to have less trouble, so he changed his seat as she asked.

Xue Jiayu smiled helplessly and followed Xue Huanyu.

Continuing to visit upwards, the third floor is the gravity simulation center where everyone can test their own gravity.

The testing method is very simple. Just stand on the machine and it will display numbers.

The children were eager to try it out and thought it was great fun, until Gu Yuan stood on the machine and the number instantly broke all previous records.

"Ha ha ha ha--!"

Everyone burst into laughter at the same time, and Gu Yuan immediately got off the machine, his face red as if it was almost cooked.

However, that was not all, several classmates came over.

"Gu Yuan, why are you so fat? You stay with Zhan Nanqi every day, why is he so thin and you so fat? Did you eat all his food?"

"Of course not!"

Gu Yuan argued with a red face, but no one listened to him and they were all laughing.

"Why is Gu Yuan so fat? He must be the heaviest in the school!"

"Have you ever seen Gu Yuan eat? He keeps sucking like a monster. I feel sick just by watching him once!"

"I saw it too, it was terrifying. I don't know why Xue Jiayu and Zhan Nanqi wanted to play with him. Don't they think he's disgusting?"

The child's words were so sharp that they could pierce people's hearts. Gu Yuan's face had changed from embarrassment at the beginning to embarrassment and shame.

“That’s enough!”

Xue Jiayu stood in front of Gu Yuan, opened her arms to protect him and block those vicious words for him.

"Don't you know that it's too much to say that about others? Gu Yuan is usually very nice to you. Won't you feel guilty for saying that about him?"

The crowd was silent for a moment, and soon someone whispered, "But he is really fat, we are not making it up."

"If you don't want us to say anything, then don't eat so much fat. You'll look scary."

"Students from other classes all said there was a wild boar in our class, and I couldn't refute them."

"If he loses some weight, how can we say that to him? He should look for the reason in himself!"

Gu Yuan couldn't stand it anymore, so he pushed the classmate in front of him away and ran out.

Even the teacher didn't react. He wanted to catch up but couldn't leave these dozens of people behind.

Xue Jiayu chased after him immediately. Zhan Nanqi also wanted to follow him, but after hesitating for a moment, he said to the teacher, "Let's go find Gu Yuan."

Without waiting for the teacher to answer, Zhan Nanqi rushed out and caught up with Xue Jiayu.

Xue Huanyu also wanted to go out, but was stopped by the teacher.

"Don't go. The more people who go, the more trouble there will be. It will be terrible if something happens to you guys."

Xue Huanyu clenched his palms in regret, it was just a second too late.

Xue Jiayu and Zhan Nanqi were left alone again.

The security guards at the entrance of the Science and Technology Museum were unable to stop Gu Yuan. Before they could even react, Xue Jiayu and Zhan Nanqi ran past them again.

Xue Jiayu was slim and nimble and quickly caught up with Gu Yuan.

"Gu Yuan——! Slow down!"

In fact, Gu Yuan was already tired from running. When he heard Xue Jiayu's voice, he slowed down and stopped to wait for her.

"Jiayu, you don't have to come out to comfort me. I'm fine."

Xue Jiayu stopped beside him, panting, and supported her knees with her hands, "You said it was okay, but you're crying."

Gu Yuan turned his back to prevent her from seeing his tears.

"I'm not crying! I'm sweating!"

"Okay, okay, you're not crying, you're just sweating. I'm exhausted."

Xue Jiayu held onto a tree and gasped for breath, only to then realize that they had run to a small forest.

Zhan Nanqi also came. Gu Yuan was touched, but also afraid that they would laugh at him, so he said first: "I'm really fine, I just came out to get some fresh air! Why did you chase me out?"

"We are worried about you. You are our friend."

Xue Jiayu sat on a rock to rest, and generously gave the other half to Zhan Nanqi.

"Don't worry about what they say. You will become very thin and handsome in the future."