The railway system in the 1930s of the Republic of China was much worse than the domestic railways in later generations in many aspects.

At this time, not only were there few railway lines in China, but there were only a few inter-provincial trunk lines in Pinghan, Jinpu, and Pingsui; the other most obvious gap was naturally the speed. The distance from Hangzhou to Shanghai was so close that it only took more than an hour in later generations.

I arrived, but during the Republic of China, I had to take a train for more than five hours.

The most important thing is that the ticket price is surprisingly expensive, even ridiculously expensive.

In the Republic of China, trains were generally divided into three classes. For the Shanghai-Hangzhou section only, the fare for a third-class carriage was two yuan, and for a second-class carriage was four yuan. The fare for a first-class carriage was actually eight yuan in French currency. At that time, the French currency and the ocean were

One-to-one exchange, that is to say, at such a short distance, for a seat in the best train carriage, you have to pay eight oceans. According to the price level at this time, oceans, French currency and "silver" in the hands of future generations

"Compared, it's about 1:200. In other words, taking a first-class seat will cost more than 1,600 yuan of "silver" for future generations.

The train fare is not only expensive, but also even more outrageous. That is, if you want to take a sleeper berth, you have to pay extra. For a first-class compartment, an upper berth is an additional 3 yuan, and for a lower berth, it is 4 yuan. The total adds up to 12 yuan.

, converted into "silver" in later generations, it is more than 2,400 yuan. In later generations, you can already travel several times from Shanghai to WLMQ in a soft sleeper.

However, the environment and comfort of the first-class train carriages during the Republic of China are still comparable to those of later generations. Not only are the seats in the first-class carriages extremely spacious, the floor is also carpeted, and the seats are actually leather soft seats. There are even first-class carriages.

The seats in the waiting carriage are all facing each other with their backs to the carriage. There is a carpeted aisle in the middle. Each passenger has a small table next to the seat that serves as a coffee table.

Not to mention the soft sleeper in the first-class train. Not only is the compartment relatively spacious, the floor inside is carpeted, and the bed is also very soft and elegant.

Although it only takes more than five hours, or half a day, from Hangzhou to Shanghai, Qi Lanfeng still carefully bought a first-class sleeper ticket for Qin Chuan, and then asked people at Hangzhou Station to help Qin Chuan carry his luggage.

He got in the car and even brought him a box of beer.

Sitting on the train for several hours will inevitably make one's back hurt. Qin Chuan is very grateful to Qi Lanfeng for thinking about himself so carefully and thoughtfully.

Since the Japanese espionage case could be said to have been completely solved, the delighted director even personally called Deputy Station Director Cheng's office and ordered Deputy Station Director Cheng to personally lead people to protect the safety of Qi Lanfeng, Wang Jiali and the prisoners, and there must not be any

If he makes a mistake, he will be severely punished.

After receiving instructions from the director, Deputy Station Director Cheng was no longer eager to help handle the case because of his fierce fight with Qi Lanfeng. Now he was frightened, fearing that something might go wrong. Yichuan Yasuo and Lan Yuqi had been taken to Hangzhou.

The station building is divided into two offices. Not only is the door where the prisoners are detained, but also the stairs and gates are guarded. Wang Jiali was even invited by Deputy Station Chief Cheng into his own office to be accompanied by him personally, ensuring safety.

There was no problem anymore, so Qi Lanfeng dared to come out to the station to see Qin Chuan off.

In front of the first-class carriage, Qi Lanfeng, who was wearing sunglasses and smiling excitedly on the platform, hugged Qin Chuan and whispered, then patted Qin Chuan's arm affectionately and watched Qin Chuan boarding.

After getting in the car, he turned around and left.

Qinchuan's luggage was very simple, only a suitcase and a box of beer, which had already been put on the bus by two people from the Hangzhou Station Action Team.

Qin Chuan's berth was the lower berth on the right side of the box. When he walked into the box, there were already three people inside. All three of them were wearing trousers and vests. One was in his forties, wearing a pair of gold-rimmed glasses, looking at

He looked like a scholar, and he was lying sideways on the upper bunk opposite Qinchuan; the other two people, both middle-aged men in their thirties, and looking polite, were sitting on the lower bunk opposite Qinchuan.

What are we talking about?

Qin Chuan nodded and greeted the three of them enthusiastically, but for some reason, the middle-aged people sitting outside the upper and lower bunks seemed to be indifferent to him. Only the middle-aged man sitting by the window stood up and greeted him enthusiastically.

Qin Chuan said hello.

Qin Chuan, who was a little confused, had no choice but to sit on his bunk. After thinking for a while, he felt a little bored. He pulled out his old suitcase from under the bunk, opened it, and took out an English version of the Russian mathematician Cole

Mogorov's "Basics of Probability Theory", he took out his cup, opened a bottle of beer and sat by the car window, pouring himself a sip of beer, opening the book and starting to read.

This book "Fundamentals of Probability Theory" was bought by Qin Chuan after traveling through time. To be precise, he bought it a week ago. This is because after Qin Chuan discovered that his grades in the telecommunications subject were excellent, he suddenly thought that he could decipher the code in the future.

To do something on the code, deciphering requires a lot of mathematical knowledge, and in his previous life, he was a college graduate in the Department of Mathematics. Although he was not a top student, the development of mathematics in that era was much more advanced than this era.

Even now he knows some mathematical methods for cracking codes that will no longer be considered advanced in later generations. If used at this time, deciphering Japanese messages should not be a big problem. If he can successfully decipher Japanese codes, it will have a great impact on the coming future.

The Anti-Japanese War is of great significance.

It's just that how he, a student of the police academy, has advanced mathematical knowledge needs a reasonable explanation. For this reason, he went to the bookstore to collect as many advanced mathematical books as possible, and this book on Probability Theory came to him.

In fact, Qin Chuan wanted to buy as many books as possible, but at this time, there were very few bookstores selling boring professional books like mathematics. There were bookstores in Hangzhou because the Department of Mathematics of Zhejiang University in Hangzhou was very popular at that time.

It is famous not only in China but also in the world. All this is because the school’s mathematics department has two world-renowned scholars in mathematics, Professor Su and Professor Chen. Both of them have Ph.D.s who have studied abroad.

He has profound attainments in mathematics and has published dozens of influential papers in international journals. He is hailed as a star in the Eastern mathematics community abroad.

Because of these two great mathematicians, the mathematics department of Zhejiang University is also famous throughout the country, so the bookstores in Hangzhou have more foreign mathematics books.

Decades later, this book on Probability Theory has indeed become the basis of Probability Theory. It is a very basic and simple book in the eyes of later generations of mathematics students. However, at this time, although it is called a foundation, it is not considered a foundation.

Qin Chuan has written a cutting-edge treatise on probability, and Qin Chuan has read most of it. He needs to finish reading this book because he needs to leave a mark of what he has read on the book, so Qin Chuan reads with a pen at the same time.

Keep drawing the key parts on top.

Unconsciously, Qin Chuan was immersed in it. He had read more than a dozen pages of the "Basics of Probability Theory" and even finished a bottle of beer. Qin Chuan took out another bottle from under the bunk and opened it.
Chapter completed!