Dongrao City has ten counties and districts.

Among them, in the northeast of Dongrao City, about 50 kilometers, there is a small county town called Mangshan County.

Mangshan County is not very large, only more than 1,000 square kilometers, but it is a small basin surrounded by mountains. Reckless and vast, the mountains are majestic. It is precisely because it is located in a mountainous area and has inconvenient transportation that the economy of Mangshan County has always been relatively poor. The two pillar industries are tourism and tea.

It is said that in the northwest of Mangshan County, there is a natural hot spring lake with beautiful scenery.

Locals, also known as "Immortal Lake".

Every time after entering the late autumn, the weather gradually turns cooler, and in the morning and evening of the fairy lake, there will be layers of white mist leisurely, and people walking by the lake are like being in the Tiangong Yao Pond. Many tourists from other places, almost everyone will go to Xianren Lake to check in and soak in the hot springs.

Six o'clock in the afternoon.

Kong Shucheng was in Long Piaopiao's office, and after being forced to drink N cups of chicken soup for life, he hurriedly left under the pretext. It was dark, he hurriedly opened the Baidu map, and soon found the "Pingding Village" that Fan Xiaoxuan just mentioned on the map of Mangshan County.

Judging from the map, the location of Binh Dinh Village is just on the north shore of the "Xianren Lake". There, facing the big lake, spring flowers are blooming. It looks pretty good. The yellow wax stone in Fan Xiaoxuan's hand was picked up in a stream at the entrance of Pingding Village.

At this moment, Kong Shucheng was of course not interested in yellow wax stone.

What he cares about is actually "pacifying Tie Gui Li".

Since, in this land of hundreds of miles, there is only one "Pingding Village", so it can be inferred from this that the "Pingding Tiegui Li" provided by the system must be in Mangshan County.

Back in the dormitory, Kong Shucheng asked Long Piaopiao for a leave, left the school immediately, and then quickly got on the bus to Mangshan County.

As night fell, the weather was slightly cooler.

Kong Shucheng didn't know if he could meet the legendary "Pingding Tiegui Li" during his trip to Mangshan County. However, the system is running out of time for him. In 33 days, he could have done a lot of things, but in order to raise mathematics to a dominant level in such a short period of time, he had to race against time to achieve Confucius.

Perhaps, only "pacifying Tie Guan Li" can make his mathematical counterattack successful.

Half an hour later, the bus quickly entered the territory of Mangshan County.

The night is hazy, the mountain roads are rugged and dangerous, and the bus can only force it at a speed of more than 20 miles. Even, there were so many times that Kong Shucheng watched the driver's eldest brother driving while playing haha and getting sleepy, and his whole heart was in his throat. Damn, this kind of driving on a winding mountain road, if the driver's eldest brother shakes his hand, it is a car crash and a fatal accident.

A hint of cool breeze came from the gap in the car window, Kong Shucheng slowly lifted the curtain of the car, and saw a bottomless abyss next to him. In the vast night, the white bus is driving on the serpentine winding mountain road, and the picture is a little scary.

Within a few seconds, the driver's eldest brother snorted again.

Kong Shucheng finally couldn't help it: "Driver, are you a little sleepy?

"Rest, resting on this kind of mountain road, isn't that waiting for death?"

"Well, you'll have to be safe. ”

"Don't worry, I've been driving this mountain road for almost fifteen years, and I've never made a mistake. ”

As he spoke, the driver's eldest brother increased his speed again.

“.........”

Kong Shucheng was so frightened that he didn't dare to speak anymore.

He twisted his head and looked at the others in the car.

To be exact, there are only three people on this dilapidated bus, excluding the driver.

Among them, one is greasy middle-aged;

The other is a sixteen or seventeen-year-old girl.

The greasy middle-aged man in the back row looked like he had a meaty face, and there was a strong smell of alcohol on his body. He wore an adidos leather jacket on top, a pair of stained jeans underneath, and a pair of black Nike on his feet. Of course, those Nike shoes looked like they were bought cheaply on the night of the day, because the originally sharp Nike logo actually had a small barb in the middle, which looked like a raised belly button.

The girl sitting behind Kong Shucheng was dressed very plainly, her face was red, her eyes were also big, and a high ponytail made her look neat.

Kong Shucheng noticed that after she got in the car, she kept holding the book in her hand to read.

The light in the car was very dim, and Kong Shucheng couldn't see what kind of book she was looking at in her hand. It wasn't until the car had been driving on the winding road for about twenty minutes that the girl felt a little tired, so she gently closed the book and leaned back in the chair to close her eyes.

Kong Shucheng turned his head and glanced at the book, and couldn't help but be startled.

Linear Algebra and Extreme Applications

Groove .........

This book is a bit high-energy!

I heard Mr. Hu Jun say that he only studied linear algebra seriously for a while when he was admitted to graduate school.

.........

When Kong Shucheng was looking back at the girl, the greasy middle-aged man behind him also woke up.

He propped up his body, which weighed more than 180 pounds, with both hands, and then rolled up his sleeves. I saw that on his left arm and wrist, there was also a domineering fire unicorn tattooed. Perhaps because the person who tattooed him was not good enough, the fire unicorn looked a little obscene, more like a toad grilling on a fire.

Huo Qilin brushed open the curtains, and then yelled at the driver: "Hey, where are you now?

"Oh, not yet, not yet. ”

I could hear that the driver's tone was a little submissive, as if he was afraid of the greasy middle-aged man.

After taking out a diamond-studded Oppo mobile phone from his pocket, Huo Qilin began to brush up on short videos of twisting his waist and dancing. And also turned the volume up to the maximum.

Kong Shucheng frowned, his eyes looking out the window.

A few seconds later, the fire unicorn took the phone and moved another seat forward, so he sat next to the girl.

The girl wanted to change seats, but the exit was blocked by the fire unicorn, so she had to swallow her anger, pinching her nose with her hands, and looking out the window. After all, in addition to the smell of alcohol, the fire unicorn also has a strong body odor.........

The bus drove forward for a few more minutes.

Huo Qilin looked at Kong Shucheng, then at the driver, and found that everyone had no reaction, so he suddenly took the book "Linear Algebra Extreme Applications" from the girl's seat.

“.........”

The girl was nervous and almost screamed, but she managed to keep her composure.

The fire qilin smiled: "Little sister, you should be in high school, right?"

The girl didn't want to talk to him, and her eyes continued to look out the window.

The fire unicorn pretended to be very serious and looked at the book "Linear Algebra and Extreme Applications". After about half a minute, the fire qilin suddenly sighed: "Hey, I have studied this math book before. But now, it's all back to the teacher. ”

Girl: "........."

She didn't speak, but there was a sneer on the corner of her mouth that couldn't be hidden.

Seeing her smile, Huo Qilin immediately became interested: "Little sister, you bought this math book, right? In the past, when I was in high school, I also bought such an algebra book. To tell you the truth, I used to be in our spicy high school, and I was also a top student, and I scored a perfect score of 100 in my math test every time. ”

This time, Kong Shucheng really couldn't help it: "Big brother, don't you have a full score of 150 points in high school mathematics?"

“.........”

The fire qilin originally wanted to pretend to be forced forcibly, but when he was poked by Kong Shucheng like this, he suddenly felt that it was all foam.

He slowly turned his head and looked at Kong Shucheng coldly.

His eyes were full of ferocity like a hungry wolf.........

..................