Qin Hongfei complained in her heart. It was she who knocked out the heartbeat tester for sale.

The heartbeat tester was slightly different from the heart rate tester. The former was more used for lie detection. She didn't know how ordinary lie detectors were, but the accuracy of the one she made was as high as 90%.

When she was in the other world, she applied for a patent for this thing she made and promoted it to some places in various cities where there were professional needs. With this, she made a lot of money. As for how much, she didn't know, anyway, it was enough for her to spend more than a year on scientific research, and it was very profitable!

For the sake of the money, she asked, "Would you like to buy it?"

"It has many functions. It can test heart rate and lies. If you have elderly people at home with cardiovascular diseases, you can also get one! It has many effects and it's only 18,888. If you miss it, it's gone." She tapped the small advertisement skillfully.

81.285.11: "Why do I feel like you're a liar?"

1.1.2.8: "Be more confident and get rid of that feeling. When did heart rate monitors become so convenient? Even at 18,800 or 108,800, people are scrambling to buy them, especially those from major hospitals."

Qin Hongfei took a look and immediately reflected on herself. She humbly asked for advice, "Brother, may I ask how much the major hospitals pay for this equipment?"

1.1.2.8 was speechless when she saw that she was asking for advice. She replied, "This kind of large equipment must cost at least 100,000, and the better ones cost hundreds of thousands. I say you can't fake it properly. This price is obviously fake."

Qin Hongfei learned the lesson and replied to the original poster, "Sorry, I don't understand the market. I'll change the price to 58,888. You deserve it!"

1.1.2.8: "..."

Have you ever seen someone asking for a higher price?

He did. And he was

quite arrogant!

Just when he was about to complain, 81.285.11 actually replied, "58,000, can it really test whether my girlfriend likes me or not? What if you are lying to me?"

Qin Hongfei said, "Then you can only admit defeat."

Listen, is that human talk?

But it is very practical.

He really can only admit defeat, otherwise what can he do.

Qin Hongfei said sincerely, "I can make it first, and you come over to take a look. If it's suitable, we can make a deal! How about it?"

81.285.11: "Okay, how many days?"

Qin Hongfei said quickly, "I'll get back to you within three days."

After the temporary agreement, Qin Hongfei no longer wasted time. He logged off the Internet, went back to the repair shop, found some things he wanted, put them in the repair box, and then went back to Lao Qin's house. He closed the door and never left except when he went to school or had meals.

Aunt Qin couldn't help but become curious, so she went to her mother-in-law and said, "Mom, what is Hongpin doing in the house all day? Don't let her get bored."

Grandma Qin also noticed that the child had been staying in the house all the time for the past two days, but she was busy in the fields. She wished that every child could learn from Qin Hongpin so that she could save herself some trouble. "Has she finished her homework?"

Aunt Qin replied, "I think she has."

Grandma Qin immediately went back to work without looking back and said, "It's enough if she has finished it. If she finishes her homework, she can play around and do whatever she wants. Why do you care so much about them?" The main thing is that even if you want to care, it may not be helpful. The child is very opinionated, and she could see it. After saying that, she continued to busy herself with her own things.

Qin Hongfei was busy, and Qin Fei was bored. She could only read the script, read the script... She couldn't go to find Hongfei because she would stare at her with a look that asked, "How can you waste time like this?" She felt guilty, always guilty. She was really bored