When the alarm clock rang, Hua Tingting rubbed her eyes and got up. After brushing her teeth, she saw in the mirror that the boss's dark circles had already risen beside her eyes.

I cried intermittently for several hours yesterday, but at night she lost insomnia because of Ivan's phone call. She didn't fall asleep in a daze until two o'clock in the morning. She has slept for less than 5 hours in total.

"Will you leave if you don't have breakfast?" Hua Tingting's mother said worriedly when she went out.

"No, I'm going to be late."

When Hua Tingting went to the bookstore to change clothes, the cashier Xiaoyue had just arrived and took pictures of Hua Tingting who was changing clothes: "Your boyfriend came to see you yesterday, did he call you later?"

"Yes." Hua Tingting didn't want to mention this topic.

"You have to thank me, it's my phone number to him. You have been talking for so long, why didn't you even leave a single phone number?"

When Hua Tingting heard this, she felt aggrieved again. Yifan had never asked her for the number. Did she ask her to give it to him on his own initiative?

"Oh, by the way, I asked him to come to you today, maybe it will appear later."

Hua Tingting forced a smile on her face, she felt a little conflicted and a little faintly expectant.

In the morning, Zhao Zhenxue came to Yifan's new home.

Ivan does not need a key, so the key is now in Zhao Zhenxue's hands.

However, before opening the door, Zhao Zhenxue knocked on the door in advance, and then the door opened itself. Zhao Zhenxue entered the door and did not see Ivan. A strange thing flashed in her heart - it was magic again.

Humans are creatures with strong adaptability. For a hundred years, humans are still thinking about how to fly like birds. Now we have begun to ask curiously when we can live on the moon. A few days ago, Zhao Zhenxue was still shocked by the incredible scenes she saw, but now, she seems to be no longer very strange.

As soon as he entered the door, Zhao Zhenxue found that the refrigerator door in the living room was open, the light inside was still on, and the compressor of the refrigerator was making a low sound of full-scale cooling, but the refrigerator door seemed to have no air conditioning at all. Zhao Zhenxue touched the inner wall of the refrigerator, and it was not cold at all.

"What are you doing when you keep the refrigerator open?" Zhao Zhenxue went over and closed the door.

"The temperature is too hot," Ivan replied.

Zhao Zhenxue didn't react for a moment. The weather has been a little hot recently. Although there are still several days before June, the highest temperature in the past two days has approached 30 degrees. However, what does this have to do with opening the refrigerator?

"Isn't the refrigerator used for refrigeration?" Yifan asked back when he saw Zhao Zhenxue's somewhat puzzled look.

After hearing this, Zhao Zhenxue was stunned for a few seconds, then he supported his forehead with his hands helplessly, feeling amused and crying.

"How long have you been driving?"

"One night, but it didn't seem to work. I was wondering if the refrigerator was still too small..."

"The entropy of an isolated system will never decrease!" Zhao Zhenxue pointed to the sentence on Baidu entry and taught the truth.

However, then her brain power showed a picture of scattered parts being spliced ​​into a computer: "Without using magic," she added.

Ivan has been able to adapt to these "scientific" language description habits on Baidu entries, but the concept of entropy is still a bit difficult to understand for Ivan's book, who has just been exposed to the laws of thermodynamics.

But Ivan seemed to be interested in this theorem and pestered Zhao Zhenxue to give him an in-depth explanation.

Although Zhao Zhenxue is not a physicist, she has been learning science fiction for so many years. Among ordinary people, her scientific literacy is relatively high.

Zhao Zhenxue took Yifan to the bathroom and put a basin of hot water in the bathtub. The water heater is solar-powered. In such summers, the amount of hot water is very abundant.

Then she used another washbasin to collect another half of the water, and this time she received ordinary tap water.

"Look, one basin is hot water and the other basin is cold water." Zhao Zhenxue pointed to two basins of water and said, "Remember this state, assume it is state A."

A is the first letter in English and is often used as a substitute... When listening, this message flashed unconsciously in Ivan's mind.

Then Zhao Zhenxue poured cold water into the hot water, and it turned into a whole basin of warm water: "This is state 2. The entropy means state 1, which means that one basin is hot and one basin is cold, with lower entropy. State 2, all the same state, and higher entropy... You can easily turn state 1 into state 2, but turning state 2 into state 1, it is impossible to do in an isolated system..."

After listening carefully, Ivan stared at the basin of warm water in front of him, and Ivan fell into deep thought.

Then Ivan disappeared.

Zhao Zhenxue spent more than ten minutes online in his room, wondering why Ivan was still in a daze. When he walked to the bathroom, he found that Ivan was missing.

Zhao Zhenxue waited in Ivan's "study room" for an afternoon, until it was dark and she thought the other party would never show up again. Ivan's voice suddenly rang behind her: "Go and buy me an air conditioner."

Zhao Zhenxue has always been very brave, but this time she was scared and shivered. She said angrily: "Where did you go all afternoon? You won't forget our agreement."

"I'm back to my own space." Ivan took out the food, bread and dried meat he had stored, and handed it to Zhao Zhenxue: "You haven't eaten dinner yet."

"Where you go next time, you must call me." Zhao Zhenxue said seriously, looking at the food handed over by Yifan, hesitated again, and took a tentative bite and found that it tasted pretty good.

"Why, are you afraid that I will do bad things?" Ivan said.

"I'm afraid you do stupid things." Zhao Zhenxue warned again, "You must not use magic in front of outsiders casually. Once you attract attention, it may cause big trouble."

"I know, don't worry, I can't bear to leave until I understand it."

When Zhao Zhenxue heard Ivan's words, she couldn't help but mutter, understanding all the knowledge on the earth - if the earth's technology continues to develop like this, wouldn't he stay forever?

Hua Tingting didn't have a good day today.

Since the bookstore started to open in the morning, she was obviously absent-minded. Whenever customers came in, she would subconsciously avoid it and secretly see if the other party was Ivan. This inner conflict entangled her all day, until she got off work, she finally realized that Ivan would not come today.

"It's better not to come, it's a waste of trouble." She said to herself in her heart, but she couldn't help but feel sour.

She originally went home after get off work, but for some reason, she walked to the entrance of the cinema. The cinema in Ningzhou was obviously not of any level. It had been aired for so long in 2012, but during this period, there was still signboard, but it was only moved from the prime time to the midnight venue.

"Sister, buy a flower..." A pitiful voice appeared behind Hua Tingting. When she looked back, she looked like the little girl she met that day. She was also a dusty, thin and pitiful seven or eight-year-old girl.

Hua Tingting felt compassion for a moment and took the little girl's hand and said, "Sister, please treat you to supper?"

The little girl smiled happily, but couldn't help but look back at the corner of the cinema - there was a boy with long hair sitting there, holding a cigarette in his hand, and the red cigarette butts appeared and faintly in the dark.

"Sister... I've had dinner, you'd better buy flowers..." After the little girl said that, her stomach couldn't help but scream to the truth.

Tian Jun noticed that Xiaohong had been entangled with the woman for a long time, so he stood up and walked towards Hua Tingting.

"What's going on?" he asked the little girl with his head down.

The little girl looked at the cigarette butts in Tian Jun's hand in fear, pointed at Hua Tingting and said, "She doesn't buy flowers, and she even said she wants to send me to the orphanage..."

Hua Tingting was choked by the little girl's words and couldn't speak, but she soon noticed that the little girl looked at Tian Jun's eyes and seemed to understand a little in her heart.

Hua Tingting took out her cell phone, but was snatched by Tian Jun. He looked over the cell phone and saw two numbers on it, 11.

Tian Jun turned off his phone and threw it back to Hua Tingting.

"Miss, I advise you not to meddle in other people's business." After Tian Jun said that, he arrogantly vomited a smoke ring at Hua Tingting, and Hua Tingting instinctively covered her nose.

Tian Jun flicked the cigarette that had almost finished smoking in his mouth, and the cigarette drew a graceful arc and fell accurately into the nearby trash can.

Hua Tingting is just an ordinary person. The definition of an ordinary person is that if doing good things costs money, then you won’t do it well.

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Chapter completed!