Introduction to Advanced Mathematics

With a glass of Coke in one hand and a large bucket of popcorn in his arms, Lu Nan waited for Ling Chuan to line up to buy tickets in the theater lobby, when someone called his name behind his back.

"Lu Nan?"

Lu Nan turned around, Ying Li was a little surprised to see that it was really him.

"Why are you here?" As soon as he finished speaking, he noticed the things in Lu Nan's hands, obviously he didn't come alone, "Watching a movie with friends?"

"Yes," Lu Nan replied with a smile, "What about you?"

"You were dragged here by your colleagues, are you also here to see the Fulian?"

"I……"

Before Lu Nan finished speaking, Ling Chuan happily ran over holding two tickets: "Wait a long time, there are a lot of people queuing up today."

Yingli was obviously even more surprised to see this person: "You are... Qian Chuan?"

Ling Chuan heard the voice carefully and it took a while to recognize the other party: "Ying Li?"

"It's me." Yingli's eyes wandered between the two, with a suspicious look on his face, "Why are you two together?"

Ling Chuan and Lu Nan looked at each other and smiled, then turned to Ying Li and said, "Oh yes, my current name is Ling Chuan, the previous name is no longer used."

Neither of them noticed that Yingli's eyes darkened after seeing their interaction. Ling Chuan was reunited with his former high school classmates, and he was a little happy: "I haven't seen you since the college entrance examination, I remember you were admitted to a medical university, right?" , how is it now?"

"It's okay." Yingli obviously had something on her mind, so she answered a little perfunctorily.

"What a coincidence, did you also come to watch the movie? Which one?"

"The next reunion."

"That's a pity, we can't be together." Ling Chuan raised his head and glanced at his watch, "Ah, we're about to enter."

"It's okay, let's talk next time."

"By the way, what's your phone number?"

Ying Li reached into his pocket and found that he didn't bring his business card: "You can ask Lu Nan, he has my contact information."

"Oh?" Ling Chuan went to see Lu Nan, and got an affirmative answer, "Well, I'll contact you when I'm free."

Ying Li casually nodded, Lu Nan smiled and said goodbye to him, and then walked towards the ticket gate with Ling Chuan.

"So you have been in touch with Yingli?" Ling Chuan took his glass of Coke from Lu Nan, "Why didn't you tell me?"

"I didn't think about it." Lu Nan wanted to know what ticket he bought. Before, he thought that Ling Chuan was so excited that he came to the movie because he wanted to watch the Hollywood blockbusters that are currently showing, but he didn't expect it to be so, "Didn't you come to see the Avengers?" Is it?"

"Who said I came to see that?"

"Today most people come for that, so which one did you buy?"

Ling Chuan smiled maliciously, and waved the movie ticket in front of his eyes: "Look!"

Lu Nan was stunned after seeing the title of the movie clearly: "Zhang Zhen tells a story?"

"Want to see it?"

Lu Nan was very hesitant: "Xiao Chuan, this is not played by Zhang Zhen."

"I know, Zhang Han played it."

"And the point is ... it's a horror movie."

"I just watched it because I knew it was a horror movie." Ling Chuan had a "so what" expression.

"I didn't even know you liked watching horror movies now," Lu Nan's eyes flickered, "Obviously you used to be very afraid of ghosts and monsters."

"That was before." Ling Chuan leaned into his ear, "I found that now I'm not afraid of ghosts anymore."

Lu Nan laughed dryly: "Really?"

"And the scarier the movie, the happier I watch it. It's fun to see the people in it screaming in fright."

Ling Chuan noticed that Lu Nan's walking speed had slowed down.

"what happened to you?"

"It's nothing." Lu Nan reluctantly grinned.

"You don't dare to look at it, do you?"

"How could it be?" Lu Nan turned his head away, not wanting Ling Chuan to see that he was lying, "Didn't you say you were going to enter the venue? Let's go then."

Ling Chuan looked inexplicably at Lu Nan who had been sluggish just now, suddenly quickened his pace, muttered "strange" for no reason, and then chased after him.

Everyone was in the next hall, and there were very few people in their hall. Ling Chuan bought a seat in the middle of the fifth row, and the two rows behind were empty, and there were only three or two kittens in the back.

"Why did you buy it so high?" Lu Nan asked softly.

"You can see clearly only when you are close." Ling Chuan replied that it was natural.

In order to hide his emotions, Lu Nan pushed the popcorn bucket in his hand to him: "You eat."

Ling Chuan picked one up and threw it into his mouth, his eyes rolled around, he hugged the back of Lu Nan's head and approached him by the dim light of the theater, touched his lips, and with a flexible tongue, he fed the popcorn to his mouth inside.

Lu Nan sucked in the popcorn he fed over and couldn't laugh or cry: "You're not afraid that the people behind will see it."

"It's so dark, who cares?" Ling Chuan smiled like a kid who got away with doing bad things, "Do you feel better?"

"what?"

"Is it full of courage?" Ling Chuan made an Ultraman gesture, "The power of love from Xiao Chuan."

Lu Nan felt a little more comfortable, and twisted his ears lovingly: "Stop making trouble, it's starting."

The face of the owner of the pond appeared on the big screen, followed by the old school buildings, swaying windows, dismembered bodies and terrified faces, accompanied by terrifying sound effects, screams came from time to time, and Ling Chuan burst into flames. Mihua watched with relish, and even giggled when she saw excitement.

"Hahahaha, 'Deng Yanzhuzi', hahahaha." Ling Chuan was amused by the kid's nickname in the film, and patted the back of Lu Nan's hand to share his complaints with him, but found that the skin he touched was icy cold.

"Are you cold?" Ling Chuan turned his head to look, and was startled for the first time since he came in. Although the light was weak, he could still see Lu Nan's eyes widened with fear, "What's wrong with you?"

Lu Nan didn't respond, Ling Chuan pushed him: "Lu Nan, Lu Nan?"

The face of "Deng Yanzhu" on the screen suddenly magnified several times, the green rotten face of a child, the protruding eyeballs seemed to pop out of the sockets, even Ling Chuan subconsciously closed his eyes, and the screams in his ears belonged to Lu South.

"Hey! Lu Nan, what's wrong with you!" Ling Chuan hurriedly pushed him hard, Lu Nan woke up like a nightmare, twitched suddenly and collapsed on the seat panting.

His scream caused a small commotion in the theater. Ling Chuan turned his head and found that the only few people were looking in their direction. He didn't care if the movie hadn't finished yet, so he quickly pulled Lu Nan's sleeve and dragged him away. come out.

Under the bright light, Lu Nan's face was pale, his feet were so weak that he had to stand against the wall, covering his mouth and retching non-stop.Ling Chuan took a tissue to help him wipe the salt water from the corners of his eyes, and complained: "Why didn't you tell me earlier because you were afraid, I never thought you would be so afraid."

Lu Nan couldn't say a complete sentence for a while: "Yes... I'm sorry..."

"What did you tell me I'm sorry? You said you didn't dare to watch horror movies and we can watch other ones. It's my fault that I didn't discuss it with you in advance." Ling Chuan patted his forehead, "But I remember you weren't afraid before?"

Lu Nan waved his hand weakly, as if he didn't want to continue this topic.

Ling Chuan helplessly looked down at the only surviving popcorn bucket in his hand: "What to do, I only ate half of the popcorn, and I haven't finished drinking the Coke, so it's a pity to throw it all in."

Lu Nan got a little better, and felt a little guilty for not seeing Ling Chuan as a movie: "I'll watch something else with you."

"What are you looking at?" Ling Chuan bit his lower lip, "I'm really not interested in Hollywood special effects films... Ah yes, let's watch that one!"

This time, Lu Nan bought the ticket with him, so he was relieved knowing that it was not a horror movie.

"Hachiko the loyal dog, it is said that this film is very touching, and you will get a tissue when you buy the ticket."

The two of them sat in the movie theater again. On a snowy winter day, Shiba Inu Hachiko was born by the stove...

An hour later, Ling Chuan sighed at Lu Nan, who was sobbing beside him. The passing crowd became curious about this strange scene, and all cast their eyes on him. Ling Chuan could only pretend not to see it.

"Here." Ling Chuan handed over a new pack of tissues. The pack of tissues they sent was used up by Lu Nan in the movie theater, so he had to ask the person next to him for another pack. That's fine. I can't stop the flood of tears from Lu Nan.

"Is it really that sad?" Ling Chuan was puzzled, "Why can't I see it at all, isn't it because the owner is dead, and his dog is guarding the subway entrance and refusing to leave?"

Hearing these words, Lu Nan, who had just improved, burst into tears again, and Ling Chuan was so frightened that he hurriedly comforted him: "Okay, okay, I won't talk anymore, come wipe it off, don't cry."

The two movies were unsatisfactory, and the two of them lost even the desire to eat, and walked home sullenly.

In order to make Lu Nan happy, Ling Chuan took the initiative to hold his hand, even entering the community without avoiding suspicion.

"Look, isn't that the kid from the Qian family?"

Discussions from passing neighbors drifted into his ears, "It really is a pervert. His mother died only last month, and she got together with a man in a blink of an eye."

"What is this, let me tell you, just after the memorial service ended that day, the two of them..." The speaker changed into a whisper.

"Hey, it's disgusting," the obedient person talked loudly, as if deliberately wanting Ling Chuan to hear, "No wonder his father said that kind of thing at the funeral. It is said that his mother was pissed to death by him, and he did something wrong."

Lu Nan's face turned pale, and he wanted to pull his hand away, but Ling Chuan held him tightly in anger: "I'm not afraid, what are you afraid of?"

"I don't want you to be gossiped about by others."

"What other people say is other people's business, so what does it have to do with me?" Ling Chuan comforted Lu Nan in turn, "I don't care at all, really, no matter how they talk about me, I will ignore it."

But Lu Nan was still unwilling: "Xiao Chuan, don't live here anymore, okay?"

"Where to go then?"

"Go live at my house, there are not so many boring people over there."

Seeing that Ling Chuan was still hesitating, Lu Nan persuaded him again: "I know you don't want to miss Auntie, this place is neither sold nor rented, I will accompany you to come back every now and then to clean the house and visit Auntie, okay?"

Ling Chuan saw that Lu Nan was always considerate of himself and didn't want to follow his wishes, so he naturally agreed: "Okay."

The two simply packed their luggage and moved to Lu Nan's apartment that night. Lu Nan lived on the eighteenth floor, which was six floors higher than the top floor.

Looking through the floor-to-ceiling windows, Ling Chuan looked at the neon lights below and the cars passing by, and then he suddenly had a whim.

"Do you have beer at home?"

"Yes, do you want to drink?" Lu Nan was surprised, "Aren't you not drinking?"

"Suddenly want to drink some, do I have to go up to the top floor of this building?"

Lu Nan took Ling Chuan to the rooftop, because of the height, the night wind rolled up the corners of their clothes and hair.

"I've never seen a night view from such a high place, and I suddenly want to try it."

Ling Chuan climbed up the wall and sat down. There was a hundred meters above his feet. He closed his eyes and opened his arms, as if he was experiencing the feeling of flying.

"Ah, so comfortable." Ling Chuan quietly enjoyed the evening breeze for a while, and when he opened his eyes, he realized that Lu Nan was not by his side.

"Where are you? Come." He patted the place beside him, "It's great to look down from here."

Lu Nan walked over stiffly, so nervous that he almost had his arms and legs together.

"Where's my beer?" Ling Chuan stretched his hand back, and Lu Nan mechanically handed him the beer in his hand, then imitated Ling Chuan's appearance with great difficulty and climbed up, sitting beside him.

"Ka——" The crisp sound of the can being opened made Lu Nan jump in fright. His hands were tightly grasping the edge of the wall, and the veins on the back of his hands swelled terribly.

But Ling Chuan didn't see all this, he was immersed in another world, sipping a beer, recalling a past event.

"I didn't drink before, you know, because of my dad." He shook his head, "No, it should be called that man. When he doesn't drink, he is no longer a person. Once he drinks, he is like a devil."

"Thanks to him, I have hated alcohol since I was a child, until I tried it out of boredom two years ago, and found that when people are drunk, it feels very good. Do you think I have Family inheritance?" He laughed again while talking.

"Do you want it?" He raised his glass to Lu Nan, and found that Lu Nan was a little strange again.

"what happened to you?"

Lu Nan struggled and shook his head: "I don't need it. It's dangerous for you to sit here after drinking."

Ling Chuan snorted and laughed: "What is this little beer, I won't get drunk."

He gulped again and took a big gulp: "The beauty of the day, don't mention the spoilers, let's talk about you, I remember when you were young, you once said that you would be an architect when you grow up."

Lu Nan was also brought into his memory by him: "I didn't understand it when I was a child. I thought that an architect could build a house as he wanted. I wanted to build a big house. I would take you and my aunt in it, and I would live in it too. Let your dad look for it again." Not to you."

Ling Chuan chuckled: "When you were in junior high school, you went to learn Sanda again and said you wanted to be a policeman."

"Probably because I thought it was useless to escape. If you become a policeman, you can arrest the bad guys. But later, you found out that the police can't arrest people as they like. Even if you report to the police, it's just a few words of criticism and education, and your end will be even worse after that." .”

"So you went off to become a lawyer?"

"That's the only way I can think of to protect you."

Ling Chuan turned his head and stared at Lu Nan affectionately.

"From childhood to adulthood, every wish of yours has come from me."

Lu Nan met his eyes and forgot where he was for a moment.

"Because my wish is you."

The two slowly approached each other, closed their eyes, and exchanged a lingering kiss on the edge of the rising building.When lips and tongue intertwined, Lu Nan tasted the fragrance of hops coming from the tip of the other's tongue.After the kiss was over, he opened his eyes again from the darkness, and the eyes of the other party became the brightest stars in the night sky.

A gust of wind blew by, shaking the bodies of the two of them. Remembering where he was, Lu Nan clasped his fingers tightly on the concrete wall below him, his expression was completely different from that of just now.

"Huh?" Ling Chuan thought he remembered some unpleasant past.

"It's too dangerous here, let's go back." Lu Nan didn't want to show off anymore, and before his body completely froze, he half-climbed and half fell down the fence in an unseemly way.

Ling Chuan laughed at his embarrassed look: "I think you are the drunk one."

No matter what he said, Lu Nan immediately reached out to him after standing up: "Come down."

Ling Chuan leaned on the edge of the wall, instead of pulling Lu Nan's hand, he stood up tremblingly.

Lu Nan's heart was about to stop beating: "Xiao Chuan!"

Ling Chuan spread his arms with a smile, and walked a few steps on it like walking on a single-plank bridge: "Do you believe it? I won't be afraid at all now."

"Xiao Chuan," Lu Nan's voice trembled violently, "come down."

His outstretched hand was also shaking, Ling Chuan had had enough trouble, he jumped off the wall, just jumped into Lu Nan's arms, and was hugged tightly in a blink of an eye, Ling Chuan realized that Lu Nan's whole body was shaking non-stop.

"I didn't know you had such a severe fear of heights." Ling Chuan, who didn't realize the danger, was still in the mood to laugh at him.

Lu Nan tightened his embrace again, and Ling Chuan patted his back like coaxing a child: "Okay, it's okay, don't be afraid, didn't I come down?"

"Don't go up again." Lu Nan trembled, but ordered forcefully.

Ling Chuan felt amused, and responded, "Okay, okay, I won't go up again."

Lu Nan maintained this posture for a long time before he could move again. The two of them returned to the apartment. It wasn't the first time Ling Chuan came here, but this was the first time he carefully looked at every place.

"What is this? I haven't heard you use perfume before." He took out a delicate bottle from Lu Nan's glass cabinet. The bottle was blue, and when he took it under the lamp, he could vaguely see the wonderful light flowing inside. group.

"That's not a perfume, it's just a decoration."

"Ornament?" Ling Chuan pulled the bottle cap curiously, "How to open it?"

"It can't be opened, it's sealed."

"A sealed bottle can't hold anything. It's strange." Ling Chuan looked at the light again, confirmed that it couldn't be opened, and put it back in disappointment.