Yu Chu was simply stunned.

How could a walker have so many features, but they were very practical, and each one was quite useful, "Hong Fei, how much is this?"

Qin Hong Fei tilted her head slightly, "Give me whatever you think is appropriate, this is in the trial stage, just so that your Grandpa Zeng can help me use it and give me feedback." Yu Chu

immediately took out the money from his pocket, just a few dozen yuan.

Qin Hong Fei didn't care and took it casually, "If you have any questions, you can come to me."

Yu Chu said happily, "Thank you Hong Fei, I'll go back first."

Qin Hong Fei stood up to see her off.

Sun Shu, who passed by accidentally, was a little stunned. What did he just see? "Navigation? Does Central City have this thing?" If not, how could Qin Hongfei master such advanced technology?

He was shocked, and suddenly felt a chill on his back. He couldn't help but turn his head. Tang Jinnan was holding his small computer in his hand. He glanced at Qin Hongfei's studio from a distance, and then looked at him, "Uncle Sun, do you know why Yu Chu's grandfather can live to be 108 years old?"

Sun Shu: "Why?"

Tang Jinnan, "He doesn't mind his own business."

Sun Shu; "..."

Warning, definitely a warning.

But is this a trivial matter?

This sister of Qin Yan, he wanted to ask, but when he received Tang Jinnan's seemingly gentle but actually cold gaze, he swallowed his words back. Forget it, he can't ask, and he dare not offend.

People like them get hurt very easily, and once they get hurt, they need to rely on the medicine of Cang Lao's lineage! Especially Tang Jinnan's, they can't afford to offend.

Ever since the identity of Qin Yan's sister was exposed, Qin Hongfei has been doing things more casually, no longer hiding it. Sun Shu suspected that she was holding her little braid and felt that she dared not tell anyone, and in fact it was true. He

has to rely on Tang Jinnan for medicine and rely on the little girl for equipment.

He can't afford to offend anyone, so humble.

The Yu family is preparing to set off for Yangcheng, and the cars are ready.

Yu Chu hurried over, "Grandpa Zeng, Grandpa Zeng... wait a minute, fortunately we caught up."

Grandpa Yu Zeng looked at the little girl running out of breath, pointed at her, and smiled, "Look, you are so useless." Yu

Chu was so angry that his face turned red!

I ran so hard for you and you still laugh at me. She stamped her feet in anger and said, "Grandpa Zeng, look, the walker."

She threw away the box and took out the walker, which was retractable. After it was directly opened, it fell into Yu Jia's eyes and he couldn't help laughing, "I have already given this to you, Grandpa Zeng..." The words stopped in shock.

Because Yu Chu had already excitedly pressed the third button, a tripod popped out from under the walker, "This can let you, Grandpa Zeng, use your strength..."

"And this." The second button was pressed.

Xiao Q's voice rang out.

"This is a navigation system. It has maps of the entire world. Hong Fei said that it will be updated synchronously based on the main system satellite. Don't worry about the old maps. Grandpa, if you don't know the way, you can ask it."

The Yu family members were stunned.

Great-aunt Yu got off the car in astonishment, "Xiao Chu, you said, this was made by your little classmate?"

Yu Chu nodded vigorously, "Yes. She is amazing."

This is more than amazing, it is too amazing.

Yu Chong said, "It really knows the way, it is not just for show."

Yu's father said, "Try it and you will know, Xiao Chu, give it to me."

Yu Chu handed it to his father.

Yu’s father began to try it out. He pressed the second button and walked to the wall. The little Q lit up. “There is an obstacle ahead, there is an obstacle ahead, please take a detour.”

Yu’s father tried again and walked to the bend of the front street. When there were still fifty meters left from the bend, the navigation voice rang again. “There is a crossroads fifty meters ahead. The one leading to the left is…”

Great-aunt Yu said in astonishment. “It’s amazing. It actually has a navigation function. But I don’t know what material it is made of, and I don’t know if it’s reliable. Let’s keep it for now and can’t rely on it too much. This time when I go to Yangcheng, I want to ask Sister Li to buy it to see if there is any similar equipment. I heard that the Tang family is researching…”

Yu Chu pouted.

Mother Yu smiled and touched her head, "Don't blame your great aunt for not trusting you. Your classmate is so young, of course, she must be amazing to make something like this, there is no doubt about that. When your great grandfather comes back, we will invite her to come to thank her."

Yu Chu said, "This is almost the same, but you should also take it with you, Great Grandpa Zeng. Hong Fei made it with great difficulty, and it has a positioning function. Cousin, you must take it with you to your grandfather."

Yu Chong snorted, not very optimistic about Qin Hong Fei's things, "Did she take money from you?"

Yu Chu knew what he meant, and said, "I gave it to you myself, just a few dozen yuan." She thought this thing was worth more than a few dozen.

But Yu Chong smiled, "I knew it." It was just a small toy to cheat money.

Yu Chu didn't like to talk to him anymore, and looked at Great Grandpa Zeng.

Grandpa Yu Zeng couldn't resist her coquetry and took it in his hand, "Okay, take it."

He also liked this thing very much. Time was very tight. After taking the things, the Yu family set off. After several transfers, they arrived at the big city of Yangcheng. As soon as they landed, someone came to protect the old man and Aunt Yu Zeng, who were the inheritors of intangible cultural heritage, all the way to the hotel.

When they arrived at the door, the old man's old illness came back and he wanted to walk by himself. The people around him couldn't stop him and could only serve him carefully.

Grandpa Yu took out the crutches given by his great-granddaughter and used them. Because it was a hotel, the road specially raised for the elderly was very flat. Even if the walker was defective, someone was protecting it, so Yu Chong didn't care. They

walked all the way to the elevator.

Grandpa Yu Zeng couldn't help but say, "This walking stick is very light and easy to use. You must thank the owner when you go back. You can also buy one to use."

Aunt Yu Zeng smiled and said, "That's fine, but after all, it was made by a little girl, so I'm not sure about it. I'd better ask Sister Li if I can order one of the new products that the Tang family is going to produce..." The Sister Li she mentioned is a college classmate.

It's a normal mentality. For people like Aunt Yu Zeng, they use branded goods, not because they are luxurious and face-saving, but because the quality is guaranteed.

There is no contradiction between appreciating Qin Hongfei and worrying about quality.

The elevator dinged.

The walker also rang, "The elevator door ahead will open. Please take three steps back carefully and keep your distance to avoid pinching your hands."

The moment the voice rang, an old man who had just walked down from the step with his hands behind his back smelled his back, trying not to hit his legs with his hands, which was embarrassing. He paused and looked over here, then his eyes paused on the walker. What made the sound? Is it this thing?

Navigation?

When the elevator door opened and Xiao Q's voice rang again, the old man was completely sure and looked at the walker with great curiosity, very interested: "Wait a minute..." The Yu