"What on earth is this?" Shou frowned and asked, reaching out to touch the gun, then looking at the device, and suddenly something popped up in his mind, "Equipment for testing heart rate? Heart rate monitor."

"No, it's a heart rate monitor. Who of you will go first?" Qin Hongfei had already assembled the parts. After plugging in the power supply, the yellow and slightly heavy gun suddenly lit up. She held the gun and looked at the three people.

Shou stepped back without saying a word.

I won't be your experimental product!

Qin Yun was a little puzzled, "Is this the toy you mentioned?..." Why can't he understand what a toy is.

Shou looked weird, toy shit!

Who takes a monitor as a toy? He glanced at Qin Hongfei and he shut up! There really is someone, there is one in front of him.

Qin Hongfei said calmly, "It's a toy. I'll try it for you. Stretch out your hand..." She was always very kind and easy to talk to when it came to experimental subjects. She put the bracelet on Qin Yun and pressed the switch!

Qin Yun's heart shuddered, but he only heard a beep. He didn't die! Fortunately, fortunately, he looked curiously at the device that three pairs of eyes were staring at, and he was worried, "What is this?"

Qin Fei was also a little surprised, "Hongfei, is this the one you used to visit your cousin last time?" There were curves and values ​​on it.

"That's a vital sign monitor, it's a little different, but the principles are similar. These values ​​are normal values ​​for the body. The human heartbeat is sixty to one hundred beats per minute, and the same goes for the pulse. This is blood pressure, 90mmhg to 140 is the systolic pressure, and the other value is the diastolic pressure and..."

As she was talking, she suddenly noticed that, except for the first one, the other two had confused looks on their faces. What are you talking about? They understand each word, but don't understand them together.

Qin Hongfei felt that he had said a lot of nonsense. "In short, the current value is the value of a person's body in a very good condition. But this thing has more functions than that. Brother Qin Yun, I will ask you a few questions, and you try to answer them with lies."

Qin Yun was dumbfounded. "Lies?"

Qin Hongfei nodded. "Tell the truth first. What did you eat in the morning?"

Qin Yun replied. "Porridge."

"Were you punished by the teacher at school during the day?"

"No, the teacher even praised me for my progress."

"What's the name of the person you like?" "

..." Qin Yun hesitated, "Bai Duo."

Qin Hongfei and Qin Fei looked at him gossipingly. With such a pure name, she must be a little cutie. I always feel that you are not worthy of her.

Qin Yun's face darkened, "What are you looking at?"

Qin Hongfei shook her head, continued to ask a few questions, then wrote them down in a notebook, let go, and said, "Now I will repeat these questions to you, and you answer with lies."

"What did you have for breakfast?"

"McDonald's!"

Qin Fei found that the value on the device was jumping, and immediately exclaimed, "Why did it change?"

She was about to leave, but when she heard the sound, she turned around to look, and her expression froze.

With each question Qin Hongfei asked, Qin Yun's answer was a lie. The more outrageous the answer, the more the value deviated from the normal range, which indirectly proved that this kid was lying.

What kind of heart rate tester is it? It's almost like a lie detector.

After asking the nonsense, the numerical fluctuations were recorded.

Qin Hongfei was quite satisfied, "Next, let's ask a normal question. Who do you like?"

Qin Yun said without hesitation, "Bai Duo." He thought of the girl who handed him a book in the corridor, and felt his heartbeat speed up.