The Boeing 737 swooped through the thick clouds and hovered over Xi'an Xianyang International Airport, the voice of the announcer waking Qiu Shan from his sleep. He opened the lightshade of the porthole, raised his wrist and looked at his watch, it was half past twelve at noon.

When Qiu Shan arrived at the south gate of Xijing University, it was already two o'clock in the afternoon. After finding a noodle restaurant nearby and having a meal in a hurry, he immediately went to the communication room at the school gate.

"Uncle, do me a favor." Qiu Shan pulled out a note from his pocket with the phone number written on it.

"What's the matter?" Behind the window of the communication room, a pair of eyes stared at Qiu Shan from above reading glasses, and a pair of hands shook the spread out newspaper.

"Please help me check this number."

The old man put away the newspaper and took the note, muttered something as if impatiently, and ran his fingers down the phone table pressed under the glass.

"The phone number of the whole school is on this list."

"Isn't that right? It's all there. The old man looked through the phone list, looked up and said, "No." He handed the note back.

"Could it be that some teachers' contact information is not on this form?"

"That's absolutely impossible, all the phones on this campus are on the list!" The old man looked at Qiu Shan with some suspicion, and seemed to be even more impatient: "Who are you looking for?" ”

"Well, I'm sorry, I may be mistaken."

The old man waved his hand and looked down at the newspaper again.

Qiu Shan walked into the campus and found Building 23 near the south gate, and found that the cordon had not been removed, and two police cars were parked in the open space in front of the building, apparently the police investigation was not over. He looked around and found that the buildings were built in the nineties of the last century, with six floors and two units each.

Hill winds around the back of the apartment building, and the back wall is overgrown with creepers, revealing only the glass windows. About 20 meters behind the building is another apartment building, separated by a concrete road. There are two rows of ginkgo trees on both sides of the road, and the ginkgo leaves are a pale yellow color in the autumn wind. A public telephone booth with a glass cover is nestled among the ginkgo trees, and the glass cover is plastered with small advertisements like dog skin plasters.

At this time, a head appeared in the window of a room on the fourth floor of Building 23, and a woman in a police uniform leaned out and looked up and down. Qiu Shan slowly turned around and walked away, so as not to attract the other party's attention.

As he walked, he thought that the time gap between the two phone calls last night was almost five minutes, and if Li Tailai made the first call from his home phone, then the location of the second call should be nearby. Walking from the school gate to apartment No. 23 for about ten minutes, it is unlikely that Lee Tae-lai will go outside the school to make a second call. The fact that the number was not on the school's phone list also means that the second call could not have been made at a neighbor's house.

Hill Hill walked along a cobblestone path and unconsciously came to a light gray student dormitory building. At this time, the sky is getting more and more gloomy, the clouds are stacked quite spectacularly, and the canopy of the tall locust tree is dense with foliage, obscuring the originally faint light. The road to the dormitory building was lined with manicured green shrubs, and a few girls were chattering out of the gate.

At this time, Qiu Shan heard a girl say to her companion, "Wait a minute, I'll go and call home." "Go straight to the public phone booth next to it. Qiu Shan's mind flashed with inspiration, and he suddenly remembered something, and immediately returned the same way.

"There's only one possibility: Lee Tae-lai is making a pay phone." Qiu Shan remembered the public phone booth behind the No. 23 apartment building, and he didn't pay much attention to it just now. He walked back quickly, and soon came to the back of Building 23, where several policemen had already arrived downstairs and were looking around the building.

Qiu Shan had no choice but to stop, find a bench nearby and sit down, and observe the situation over there. About half an hour later, the two police cars started up and drove out of the school with an ambulance.

After a while, Qiu Shan quietly returned to Building 23. The cordon in front of the building has been removed, but there are more students in the open space, and everyone is gathering to talk about something.

Qiu Shan quickly walked around to the back of the building, and the public telephone booth that he had just ignored was on the right side of the road. This kind of phone booth enclosed by glass cover is not much different from ordinary phone booths on the street.

Qiu Shan took out his mobile phone and walked to the phone booth while dialing, and the sound of "ding ding ding" came from the phone booth. Qiu Shan walked into the phone booth and looked at the display screen, which was his mobile phone number. He hung up the phone, glancing over his head and feet.

The top cover of the phone booth is a blue patent metal sheet with an empty top. The telephone was an old-fashioned card machine, and Qiu Shan remembered that this kind of machine could make a free three-minute call. He looked at the fuselage and there was nothing special about it, except for a few old spots and scratches. Qiu Shan carefully searched all the corners and crevices, but still found nothing. He even checked the floor under his feet, and there was no sign of loosening.

Qiu Shan walked out of the phone booth and slowly circled around it, his eyes searching up and down. Except for the upper circle, the other parts of the glass cover are covered with small advertisements, some of which have been exposed to the wind and sun, slightly wrinkled, yellowish in color, and the corners have been peeled off, and some are clearly written, and the paper is snow-white, as if they have just been pasted. It's nothing more than "unclogging the toilet" and "air conditioning repair" and the like, even if it's an ad for a new post, there's nothing suspicious.

Qiu Shan looked at the glass cover covered with small advertisements and suddenly remembered the bass. The man must have searched the phone booth as well, perhaps more thoroughly than he did, and might have even gotten the clue and wiped it out.

Thinking of this, Qiu Shan couldn't help but sigh, rubbed his sore eyes, and slowly walked back along the road.

At this moment, small raindrops drifted in the air, and the wind rustled the leaves. A cool breeze blows with cold rain, rolling up ginkgo biloba leaves and flying in the air. Qiu Shan held the brim of his jacket and looked at the sky, a few drops of rain full of autumn cold hit his face, he couldn't help but feel a thrill, and suddenly remembered that Li Tailai said on the phone last night that he would rush to the phone booth before the rain. I didn't care about this headless sentence at the time, but now that I think about it, it seems extremely abrupt.

The rain gradually began to fall heavier, wetting Qiu Shan's hair. He looked back at the phone booth and involuntarily walked towards it, walking faster and faster, and finally rushed into the phone booth. The raindrops had soaked the glass cover, and the window was slowly turning gray.

At this moment, Qiu Shan suddenly saw the handwriting faintly visible on a small piece of glass above the advertising poster.

Qiu Shan was extremely surprised, and leaned over to take a closer look, and found that this small area was no different from the surroundings, but when the drizzle touched the marks, it was immediately sucked dry, as if it had been sucked away by a sponge.

Blurred marks of words gradually appeared on the wet glass walls. The words are not big, they are all connected together, very sloppy, and it should be written in a hurry by the person who left the words. Against the background of the surrounding rain and fog, the handwriting becomes legible as if it is engraved on glass. Qiu Shan looked closely, and it was a poem:

Looking sideways at the time of the eight Ling rods

A sutra is not cold

Even though kings are in the eyes of the law

The third Buddha came to the mountain and did not return

Qiu Shan thought silently in his heart, and was thinking about it, when the rain outside the window became heavier and heavier, and the raindrops hit the metal pavilion cover and the glass cylinder wall "bang", and after a while, they converged into a trickle and flowed down along the cylinder wall. The quatrain faded into obscurity as the rain washed away, and after a while it disappeared again.

Qiu Shan couldn't help but be surprised, and stood in the phone booth, but there were a lot of things in his mind. This poem is undoubtedly left by Lee Tae-lai...... Why did he do it? And who is the person who is following him......

In any case, Lee Tae-rae must have known that he was being followed, and that his death was most likely related to it.

The rain became heavier and heavier, and soon there were lines of water on the ground, and the raindrops hit the ground, splashing patches of water, and Qiu Shan felt cold at the ankles, and his trousers were wet with the rain. He looked out the window, and it was getting dark, so he grabbed his jacket and hat around his head, tightened the zipper, and rushed out of the phone booth.

Qiu Shan trotted all the way back to the noodle restaurant where he ate at noon, and it was the time for the meal, and there were many diners inside. He sat down in a corner, asked for a noodle soup and a cold dish, and ate it together, pondering the meaning of the poem as he ate.

Eight Ling Rod... What does it have to do with Qianling? He remembered that when he visited Qianling in the past, he had seen Huabiao, Sima Dao, statues, Shusheng Ji Tablet, wordless Tablet, etc., but there was no such thing as "Baling Rod". As for the "Sutra of Calculation", I have heard of some of them, they are all books that discuss mathematical problems in ancient times, and the poem mentions "a Sutra of Calculation", I don't know if there is any special meaning. The kings, the Dharma Eye, the Three Buddhas and the like, all sound related to Buddhism, but it is not clear what the meaning is.

Qiu Shan thought about it and felt that the top priority was to go around Qianling to see if he could find some clues.

Thinking of this, the mobile phone in his pocket suddenly vibrate. Qiu Shan took it out and saw that it was an unfamiliar number. He hesitated for a moment before answering the phone.

"Hello?" Qiu Shan lowered his head and put his phone to his ear, but the call had been hung up.

Qiu Shan raised his head and subconsciously looked around. The raindrops outside the window thinned out, turning into silver threads in the air under the light of the dim street lamps.

A tall, thin figure in a black hoodie walked in from the door of the store, hands in his pockets, and walked towards the hill table with his head down. Qiu Shan sat at a small table for two people in the corner of the wall, and walked to the small table with a thin and tall man, and without saying hello, he pulled out the chair opposite and sat down.

Qiu Shan beat the drum in his heart, not knowing whether the other party was friend or foe, secretly thinking that even if the person who came was not good, he would not be rough immediately in the public, so he calmed down and looked at the thin and tall man fixedly. The man had two sword eyebrows, deep eye sockets, a slightly thin face, and the left side of his face was covered by the shadow of the brim of his hat.

Qiu Shan was hesitating to strike up a conversation, when the mobile phone he was holding suddenly vibrated again. He looked at the screen of his phone, and it turned out to be a text message that read: "Qiu Shan, your situation is very dangerous. ”

Qiu Shan looked at the text message in surprise, then looked up at the tall thin man suspiciously, and saw that he was still fiddling with his mobile phone. Qiu Shan looked around, and saw two sturdy men sitting at the table by the door on the right, talking about something, and glancing over here from time to time.

At this time, Qiu Shan's mobile phone vibrated again, and a new text message was displayed on it: "If you believe me, please don't speak." I'll get you out of here. ”

Qiu Shan hurriedly replied with a message: "Who are you?" ”

"I'll sit across from you."

Qiu Shan looked up at the tall and thin man, and texted and asked, "Why do I believe you?" ”

"Lee Tae-rae is dead, and you are now one of their targets."

Qiu Shan chuckled in his heart, remembering the mysterious and cold bass on the phone last night.

"What should I do?"

"There's a door on the left behind you, and a passage behind the door leads to the bathroom, wait for me there."

Qiu Shan glanced at the tall and thin man, and when he saw that he was still looking at his phone with his head down, he stood up and walked towards the back door on the left. As he passed by the store, Qiu Shan glanced at the two big men with his eyes, and when he saw that they had stopped talking at this time, they both sat up straight and stared at him.

Qiu Shan pushed the door open, and there was a passage behind the door, but the passage was shorter, and five steps away was the bathroom. An old curtain hung at the door of the bathroom with the word "toilet" written in red paint. Qiu Shan opened the curtain and pushed the door in, and saw a wooden lattice window opposite, the glass was dirty, the pane had been tied with iron wire, rusty, and obviously had not been cleaned for a long time. The windowsill is not high above the ground, so it is not difficult to get out, but it takes a bit of effort to unscrew the wire.

At this time, the tall and thin man also walked in, bolted the door, looked at the hills, and walked straight to the window.

"How do you know ......"

"Shh The tall and thin man made a silent gesture, walked to the window, looked at the wire tied on the pane, pushed it with his hand, suddenly held his breath, held the pane and broke it suddenly, the wire was all broken, and he was stunned to see the hills. There was a rush of footsteps outside the door at this time, and it was thought that the two big men should have noticed that the situation had changed and followed.

The tall and thin man jumped on the windowsill and turned back to Qiu Shan and stretched out his hand.

The bathroom door "snapped", and a big man shouted to open the door. Qiu Shan hurriedly held the thin and tall hand, and a strong force came, and Qiu Shan stepped on the windowsill in two steps. The two of them turned out the window, and there was a small alley outside, the weather was gloomy at this time, but it was not completely dark, and the alley was full of rain.

The tall and thin man said, "Follow me." Then he strode out of the alley.

Qiu Shan followed closely, looking at the thin and tall back in the faint night as he walked forward one foot at a time, although his heart was full of doubts, he didn't dare to stop under his feet.

The tall and thin man suddenly turned around and said to Qiu Shan, "Your cell phone signal is being tracked, it's best to turn it off immediately." ”

Qiu Shan secretly thought that this was the reason, no wonder the other party could find him so quickly, and hurriedly took out the mobile device and turned off the power supply.

The pavement of the alley was full of potholes, and there were a lot of water stains, and the two of them did not pick the dry ground, wading straight through the water, and the splashing sound of "fluttering" sounded particularly rapid and harsh in the quiet alley.

When there were still about five zhang away from the mouth of the alley, a person with five big and three thick suddenly flashed on the opposite side, and the dim light outside the alley shone obliquely on the person, showing a body of horizontal muscles. The man paused slightly, and walked down the alley, his sturdy figure gradually covering the wet and glowing white ground.

At this time, there was also the sound of wading water behind him, Qiu Shan looked back, and secretly complained in his heart, a big man in the noodle restaurant just now had already come up, one after the other, ready to give them an urn to catch turtles.

The tall and thin man did not stop, and continued to sprint forward.

When the two sides met each other, the figure of five big and three thick was in the middle of the road, and shouted fiercely: "Stop." The thin and tall man didn't mean to stop at all, and walked straight to the big man.

The big man suddenly raised an object in his hand and slashed over, flashing a cold light in the night.

The tall and thin man stepped up diagonally, and snorted softly, Qiu Shan didn't see clearly what his hand was, only heard the big man's "ah", the machete fell into the puddle with his hand, and the person fell diagonally along the root of the wall.

The sound of "fluttering" water suddenly rose behind them, and Qiu Shan looked back, and the man was rushing towards them with a knife. Qiu Shan hurriedly jumped forward a few steps, and the man pounced from behind, suddenly jumped up, shouted in his mouth, raised the knife in his hand, and slashed at the back of Qiu Shan's head.

Before Qiu Shan had time to dodge, he saw a figure flashing in front of him, and the thin and tall man kicked twice on the right wall of the alley, stretched out his body diagonally, and chopped the back of the big man's neck with his palm as a knife.

The big man fell to the ground with a "grunt", burying his face in a puddle.

The tall, thin man lifted the man's back collar and lifted his head out of the puddle.

"Hurry up, their men are coming." The tall and thin man said and ran quickly out of the alley, and Qiu Shan hurriedly followed.

The two of them ran out of the alley quickly, and there was a street outside. By this time, the rain had completely stopped, and the lights were on, and the water stains on the street reflected the street lamps and the lights of the roadside shops. The tall, thin man strode down the street as he reached for a taxi. An empty car happened to pass them, and the driver stopped and shouted through the window, "Where are you going?" ”

"Where are you going?" The tall and thin man asked.

"I have to run west."

"Alright, let's go west."

The two got into the car and sat down, and the tall thin man said, "Follow your way, we'll just go around." ”

"Okay." The driver answered, glanced at the two of them in the reflector, and chatted: "The two of them came from other places in their later lives, there are many interesting places in the west, the old Red Mansion and the Dabai Pavilion are very good." Just by the way, why don't you take the two brothers around? ”

"Okay." The tall and thin man replied casually, turning his head to look out the window. Qiu Shan followed and looked back, and saw two off-road vehicles rushing to the mouth of the alley and stopping from a distance, and it was estimated that eight or nine strong men in black rushed down from the car, all holding bright things in their hands and pouring into the alley. Qiu Shan breathed a sigh of relief, secretly glad that he had run in time, and when he thought of this, he looked at the tall and thin man, and saw that he had closed his eyes and recuperated.

After about 20 minutes to the west, the taxi stopped on the side of the road, and the driver said, "The old Red House has arrived, do you want to go here?" ”

"Okay." The tall and thin man paid the fare, and the two got out of the car. Qiu Shan looked at it, and it turned out that the so-called old Red House was a sauna and bathing center.

When the taxi was far away, the tall and thin man said, "We have to go back." "Still standing on the side of the road hailing a taxi.

Qiu Shan looked at him suspiciously, and couldn't help but ask, "What do you call your brother?" ”

"More on that later." The tall and thin man replied without replying.

"Where to go now?" Although Qiu Shan was unhappy in his heart, he thought that he had been rescued just now, so he had to ask patiently.

"983 Hospital."

"To the hospital?"

"Yes." The thin and tall man turned around and nodded affirmatively at Chong Qiushan: "Li Tailai's body is there." ”