Liu Ming's face flushed, he was also in his twenties, and he was stunned by a fifteen or sixteen little kid, and no one could hold his breath.

"Okay, then I'll give you the money first. Liu Ming said embarrassedly.

Zhang Chen waved his hand, "Brother Liu, don't worry, I'll go in the afternoon to see if I can pull another order, and then we will end it together." ”

Liu Ming thought for a while and said, "That's also done, I wish you a successful start." ”

Zhang Chen grinned and said, I wish the two of us a victory.

In the afternoon, Zhang Chen found three waves of customers by squatting, one of them was more suspicious of the compatible machine, and after coming to see Liu Ming's stall, he felt unreliable and had no choice, and the remaining two were attracted by the low price, and one of the middle-aged men specially told Zhang Chen to issue the invoice and write more money. He came to buy a computer for his unit.

Liu Ming was busy with the transfer of goods, settlement, and packaging, and Zhang Chen was busy installing machines and systems, and by the way, he told customers to pay attention.

It was busy until half past six in the afternoon, when it was dark, and the two lists were completely finished before the electronic market closed.

Zhang Chen and Liu Ming were busy this afternoon, and their feet didn't touch the ground, and now they can finally take a breath.

The two of them slumped in their chairs and neither of them spoke, they looked at each other and laughed in unison.

In the past half a day, with the help of the three customers brought in by Zhang Chen, two of them cut out the cost of purchase, and earned a total of 11,800 yuan.

Liu Ming felt a little incredible, what he earned in the afternoon today, even if it was the part he gave to Zhang Chen, what he earned was equivalent to most of the previous half of the month's income.

Liu Ming slowly took out the money he earned today from his pocket, and directly ordered 6,000 yuan for Zhang Chen, Zhang Chen was not polite, and took it and put it in his jacket pocket. Zhang Chen put on his coat, wiped his face with a towel, and said to Liu Ming: "Brother Liu, I'll go first, my mother should be in a hurry if I go back too late at night, I'll come back tomorrow morning." ”

"Wait a while, wait a while, you can leave a contact information, I want to find you in an emergency, and you can have a place to find it." Liu Ming was actually still not at ease, he had seen Zhang Chen's sales ability and potential for most of the day, and he was afraid that Zhang Chen would find other partners.

"Okay, I'll leave you my home phone. Zhang Chen thought about it and left his home phone number.

Zhang Chen's family just installed a phone last year, when his parents had not been suspended without pay, and the conditions at home were not so difficult, so with the trend, a phone was also installed, and the initial installation fee was more than 2,000.

Saying goodbye to Liu Ming, Zhang Chen picked up the car from the parking lot and rode home slowly.

Zhang Chen's day was actually far from being as relaxed as he appeared, and he had been highly nervous. On the one hand, although he believes that his sales strategy of squatting at the door of the brand machine is correct, sometimes it depends on luck whether he can sell or not. On the other hand, I was reborn 20 years ago, although three or four days have passed, I still lack a sense of reality, I always feel that the world is both familiar and strange, and I am more like a bystander.

In February, it was already dark before 7 o'clock. Lights were already on in the windows of residential buildings on the side of the road. Looking at the lights of thousands of homes from afar, Zhang Chen felt a deep loneliness.

When Zhang Chen arrived home, it was almost eight o'clock. Su Wenjin was nagging again, and he had already eaten dinner at home. Grandma was afraid that after Zhang Chen came back, the food left for Zhang Chen would be cold, so she put it in the steamer and kept it warm. Zhang Chen ate the family meal and felt a sense of belonging to this world.

After eating, his parents and grandmother were watching TV in the small living room, and Zhang Chen returned to his room to review his homework.

Zhang Chen was not a very hard-working student in his previous life, although his grades were good, but he mainly relied on the urging of parents and teachers, and did not have much initiative in the supervisor.

After being reborn, Zhang Chen made up his mind that even if he had the advantage of being reborn for 20 years, he could not relax in his studies. Of course, he has the expectations of his parents, and more importantly, his future life experience makes him know the meaning and usefulness of learning better than most of his peers.

For true success, it is not enough to rely on the opportunities that come with being born again. There are a lot of opportunities, and even if you are reborn, you may not have enough ability to grasp them. Only by constantly improving one's abilities in all aspects can we not watch it slip away when the opportunity comes.

made three geometric scrolls, and Grandma Zhang Chen was too old to stay up late, so she went to sleep first. Zhang Chen turned off the fluorescent lamp, turned on the desk lamp, and continued to work on the problem.

After a few days of review, Zhang Chen found that the progress of the review was much faster than he imagined. It may be that the IQ of adults is indeed higher than that of teenagers, and Zhang Chen's body now lives the soul of an adult, so in terms of logical thinking and broad-mindedness to see problems, it is incomparable to young people.

Adults often say that once you pass twenty-five, you will be slow to learn anything. In fact, it is not that IQ has decreased, but because it is difficult to concentrate on studying as much as it did when I was a teenager. Adults need to think about making money, surviving, falling in love, getting married, career, leadership perceptions, and so on and so forth. When there are more chores, the efficiency of natural learning decreases.

Purely in terms of IQ, the IQ of an adult is definitely higher than the IQ of his youth. There is a wealth of research data to prove this. The famous psychologist Raymond Cartel believes that IQ is a comprehensive embodiment of intelligence, and intelligence is divided into fluid intelligence and crystalline intelligence. Fluid intelligence is a person's innate ability to perform intellectual activities, relying on innate endowments that improve as the nervous system matures, such as perceptual speed, mechanical memory, recognition of pattern relationships, etc.

Conversely, the ability to apply previously acquired knowledge and experience, such as vocabulary concepts, verbal comprehension, ways and means of dealing with problems, etc.

Previously, psychologists believed that fluid intelligence was not influenced by education and culture, but now more and more research proves that fluid intelligence is developed to varying degrees, so the upper limit is also different.

That said, while everyone's upper limit on IQ is different, most people don't even develop their own upper limit on fluid IQ.

At the same time, fluid intelligence peaks in early adulthood, while crystallized intelligence continues to grow gradually and steadily for most of adulthood, and does not begin to decline until after the age of 60.

Zhang Chen's current state is the best, his fluid intelligence has not yet fully risen to the peak, and there is still the possibility of continuing to develop, and the crystal intelligence has a lot of experience in the previous life, which is far beyond his current peers. Therefore, it is normal to feel that the speed of revision is faster than you expected.

In his previous life, Zhang Chen's science was better than the liberal arts, and now he is able to review smoothly and feel more comfortable, especially after drawing a relatively subtle auxiliary line to solve a difficult problem, he seems to have realized what the beauty of mathematics is.