"Match, martial arts match?" Lei Pulse asked very casually, without any emotional fluctuations because of the other party's identity.

The reason is very simple, Shi Ming, the president of the Jiangzhou Warriors Association, has been friends with him for many years and has a very good relationship.

I want to think of the thunder vein back then, but he is the most dazzling genius in the Jiangzhou martial arts world!

At that time, Shi Ming was also an extremely strong genius, and he practiced in the same martial arts hall as Lei Vein.

Therefore, these two people have a very close personal relationship, and Shi Ming often asks Lei Mai for advice and benefits a lot.

Until now, Lei Pulse is the most respected "big brother" in Shi Ming's heart, and during the New Year's holidays, he will always find Lei Pulse to get together and recall the past events of the year.

"It's not a martial arts race, it's just a bicycle race for kids. ”

Shi Ming replied with a smile: "My three vice presidents also have important matters today, so I want to come and go, and only you, Brother Lei, can attend on my behalf!"

"Brother Lei, can you help? Just go and sit on the rostrum for a morning, it's very relaxing. ”

After hearing this, Lei Pulse hesitated for a moment before replying, "Okay." ”

"Thank you Brother Lei!" Shi Ming on the other end of the phone said repeatedly, "I'll send my secretary to pick you up right away!"

"Hmm. ”

Hanging up the phone, Lei Mai quickly gathered his mind and thought secretly: "It seems that I can't go back to the museum to see the teacher until after noon today......

............

Half an hour later.

Yuanhua Street, the gate of the Sunny Day Martial Arts Hall.

"Closed for a day?"

Xu Mang, who arrived at almost the same time, looked at the note posted on the door, looked at each other, and then showed helpless smiles.

"The teacher is definitely going to play with the little sister again!"

"It's better to go back to sleep with peace of mind, this teacher of ours is simply a model of not loving the country and loving his daughter!"

"Withdraw, withdraw, since the teacher has decided to close the museum to play with his daughter, then ten cows can't be pulled back!"

Soon, after "complaining", the three people who knew Chen Xuan's personality well chose to leave without hesitation.

"Yawn!"

At the same moment when the three major disciples ended "complaining", Chen Xuan, who had just arrived on the shore of Crescent Lake, couldn't help but sneeze.

"It's too windy in the morning, I have a cold, shouldn't it be......" Frowning slightly, Chen Xuan muttered secretly, "So, is someone missing me?"

Chen Xuan, who was muttering while walking, didn't take long to come to the place agreed with Science F4 - Sunset Pavilion.

"Uh, you four, you won't be able to stay up all night, right?" Seeing Science F4 again, Chen Xuan was taken aback.

I saw the science F4 at this time, all of them had deep dark circles, and at first glance, it was caused by staying up late.

"Time was so tight that we didn't close our eyes for two nights, just to get the bike you asked for!"

Shaking his head, Xiao Qi lifted his spirits, and then his eyes motioned to Chen Xuan to look aside: "Oh, look! Fortunately, we finally got it!"

Chen Xuan hurriedly looked sideways, only to see that not far away, there was indeed a strange-looking bicycle.

What surprised Chen Xuan the most was not its appearance, but the fact that this bike was weirdly standing upright on the ground, without any support, but it was able to maintain its balance!

No matter how whirring the lake breeze blows, there is no way to blow it down.

Because of the slight tilt, it doesn't take long for the bike to automatically regain its balance!

"This ...... What's going on? How could it not fall?" Chen Xuan was extremely curious.

"I designed it! I have a balance system built into the front wheel of the bike, and the rotation of the flywheel in the control center creates a gyroscopic effect that keeps the bike permanently balanced. In Science F4, the chubby man suddenly proudly explained, "So, whether it's stationary or fast, it will never tip over!"

"With a balance system, will this car be heavy?" asked Chen Xuan worriedly.

After all, if the body is too heavy, then Qingqing will have a hard time riding, so it will have a big impact on the final result.

"You can try!" said a tall, thin man smugly in Science F4.

Seeing that the tall and thin man was extremely confident, Chen Xuan hurriedly walked over, ready to see how much the car weighed.

"What, how can it be so light?"

With a slight effort, Chen Xuan easily picked up the bicycle and couldn't help but exclaim.

According to his estimates, the total weight of this car is not more than 3 kilograms!

"The body body is the lightest microlattice material in the world today, and I made it with a 3D printer in my research center!" said the tall and thin man smugly, "As for the other fixed connection parts, hehe, they are all made of special titanium alloy!"

"Basically, it's the lightest bike in the world!"

After listening, Chen Xuan suddenly realized that he admired this science F4 more and more.

"These science nerds really have two hits!"

While sighing in his heart, Chen Xuan carefully observed this strange-looking bicycle, and finally couldn't help asking: "Why does it look a little different from other bicycles?"

Of course, this is just Chen Xuan's conservative statement.

In fact, isn't this bike a little different?

The overall body, including the front and rear wheels, is very narrow and thin, and it is very sleek everywhere, with a strange appearance.

The most peculiar thing is that it doesn't even have a bicycle chain!

If it weren't for the fact that there were still two pedals, Chen Xuan would have wondered if the Science F4 had made an electric car......

Hearing Chen Xuan's question, Xiao Qi suddenly came to his senses, and hurriedly gave an explanation: "The appearance of this car is all a streamlined design that I have researched according to the ideal aerodynamics! This kind of design can minimize the wind resistance, and save dozens of grades of effort compared to those bicycles!"

"Originally, I wanted to add a device that absorbs wind resistance and turns it into power, but it was too heavy and cumbersome, so I didn't think about it. ”

As soon as Xiao Qi's words fell, Chen Xuan gave a thumbs up to the Science F4 and praised repeatedly: "Cow! You guys are really good! I believe that my family Qingqing will definitely get good results when riding this bike!"

"Wait!"

At this time, the last member of Science F4 said anxiously: "Master Chen, I have made a huge contribution to this car, you can find it quickly, and then praise me!"

"Uh...... Where is your contribution? I don't seem to have noticed!" Chen Xuan frowned slightly.

"Cushions, under the cushions!" replied the member.

Hearing this, Chen Xuan immediately squatted down and raised his eyes to observe the cushion.

I saw that under the cushion, there was a circular groove, as if something could be put in.