The Fengtai camp in old Beijing was empty overnight.

The empty Nanda camp no longer has the hustle and bustle of the military drills of the past. I only saw a sacrificial flag made of 60 bloody human heads in front of the flag stand at the gate of the camp.

The businessmen who came early in the morning to grab the land and sell were terrified! What's going on with Nanda Camp today? Zhang Dadu is no longer training troops?

Some of them were bold enough to go into the empty camp to find out.

Hirata Dafen mixed in the crowd and walked into the camp. It is a special high school sent to Beijing by the Ministry of Internal Affairs of Japan, and he has lived in old Beijing for ten years.

(Japan's Special High School is a Japanese espionage organization, which was established in the late 19th and early 20th centuries and was established as early as the Russo-Japanese War.) The full name is the Special Higher Police Division, which is subordinate to the Ministry of Internal Affairs of Japan. ）

If it is not clear that Hirata Daifen is Japanese, he is like thousands of ordinary people in Beijing, and you will not be able to tell that he is a specially trained Japanese spy.

Previously, when the Beiyang government of China appointed a new Xinjiang provincial governor, the newly emerged youngest feudal official in China with no background immediately attracted the attention of the Japanese!

The Japanese Ministry of Internal Affairs has issued a general order to all organs stationed in China, and Japanese institutions at all levels in China have made every effort to collect information on Chinese officials and troops entering Xinjiang.

Today is the day when Hirata is in contact with his colleagues who have infiltrated the New Army in Xinjiang, because the New First Army has just been reequipped and issued weapons a few days ago. The Japanese Army needed detailed information on the armaments and personnel of the various garrisons and warlords in China.

Seeing the empty camp, Hirata knew that it was the troops that had been pulled out. He hurriedly turned around and left, and he had to send the news of the troops entering Xinjiang to the Beijing branch of the special high school as soon as possible.

When he passed by Jingguan again, he glanced at it unintentionally and suddenly stopped his steps. He was surprised to see his contact, the head of Inuichiro in the middle of Kyokan.

Hirata hurriedly stabilized his mood and, like the other vendors, hurriedly left the Fengtai camp.

He wondered, Ichiro Inu was also a senior undercover officer, how could he be exposed?

Captured spies can be directly executed according to international practice, and the Japanese government does not even have an excuse to protest and threaten them. Hirata knew that the puppy was probably going to die in vain~~~

But what he couldn't have imagined was that the special high school class also lost contact with more than 50 senior agents at the same time, which was the biggest loss since the establishment of the special high school.

And what the Japanese didn't expect was that ~ what exposed these lurkers was the small "clogs".

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Let's not talk about how the Japanese investigated the missing spy of the special high school.

It is said that after two days and nights of rapid marching, the New First Army finally rushed to the temporary repair camp set up in Zhangjiakou by the advance regiment that had set off one day earlier within the time specified by the second master.

Zhangjiakou, also known as "Zhangyuan" and "Wucheng", is located in the northwest of Hebei Province and is the central city of northwest Hebei, connecting Beijing and Tianjin, and communicating with Jinmeng. In the eighth year of Jiajing in the Ming Dynasty (1529 AD), Zhang Zhen was garrisoned to open a small gate in the north city wall, called it "small north gate", because the door was small as a mouth, and was built by Zhang Zhen again, so the folk also called "Zhangjiakou".

This is the origin of the place name of Zhangjiakou.

Since the second year of the Republic of China (1913), Zhangjiakou has been subordinate to Xinghe Dao and North Dao, Chahar Special District, Zhili Province (Hebei Province).

Zhangjiakou is 155 kilometers away from Beijing. It is impossible for the troops to march in a straight line, not to mention that the new first army is full on horseback and has 1,500 logistics supply trucks, so the new first army can only choose the ancient road into Beijing that allows trucks to barely pass, and it is more than 200 kilometers from Beijing to Zhangjiakou via the ancient road.

When the second master finished washing in the tent set up for himself by the logistics department, he unexpectedly received an urgent telegram from the Ulanqab Railway Construction Headquarters.

It turned out that the commander-in-chief, the American engineer Tommy Horner, and the deputy commander-in-chief, the Russian engineer Ivan, had a disagreement over the gauge of the railway construction.

Tommy wants to use the standard gauge of 1435mm, on the grounds that this is the international standard gauge; Ivan believes that Xinjiang is an inland province, and the transportation of goods mainly depends on railways, and the large transportation volume of 1524mm broad-gauge trains is more suitable for Xinjiang.

One said that the construction cost of broad gauge is high, and the other said that the cost of standard gauge transportation is higher than that of broad gauge, which is not conducive to the construction and development of Xinjiang. So the chief and deputy commanders couldn't convince anyone, and the dispute couldn't be resolved, so the lawsuit was brought to the second master.

The second master was also a little hesitant when he saw this telegram. Because during the Republic of China period and before, most of the railways built in China were standard gauge 1435.

But he is very dismissive of the so-called international standard of 1435mm, because he knows that 1435mm, as the international standard gauge, is just a cold joke of "the ass decides the head".

The so-called international standards have no scientific basis at all, and are just a kind of dependence on railway builders in Western countries. The previous railway builders used 1435mm, so I also used it, so the so-called "international standard" was formed.

Since it's a "standard" that everyone can learn from, that's interesting! So how did the international standard 1435mm gauge come about? Is it scientifically measured and demonstrated?

No! The real reason makes people speechless~~~

That's because the British, who were the first to build trains, used the 1435mm gauge of the city tram, while the people who built the trams used to build horse-drawn carriages, and the gauge used was the 1435mm track of the horse-drawn cars.

So why did the carriage at that time use a 1435mm wheel base?

Because the wheel base of the chariot of the ancient Romans was 1435mm, the reason why the ancient Romans used the wheel base of 1435mm was because the width of the buttocks of the two horses pulling the chariot was exactly 1435mm.

Isn't it funny and ironic? A typical example of "the ass decides the head"!

In his previous life, the second master was very uninterested in this standard! Because of the continuation of this standard in later generations, Chinese-made trains will not be able to transport China's largest launch vehicle, because the railway culvert is only a little wider than the track, and the equipment with a large aspect ratio cannot pass through at all, forcing Chinese scientists to disassemble and reassemble the segmented transportation. Not to mention the trouble and effort, it will also cause the hidden danger of accidents in secondary assembly.

Now it's easy for the second master to call the shots, and he wants to try to build his second master's standards all over the entire Eurasian continent.

The common problem of traversers is very arrogant! There's no way not to be arrogant, who let him have a space to cheat!

Therefore, his choice is more inclined to Ivan's large-capacity broad-gauge proposal, but not all of them are adopted. These two goods directly changed Ivan's 1524 gauge to a 1550mm standard.

Although the earthwork for construction has increased compared with 1435mm, now China's labor is cheaper! As long as you take care of the food, some people come to ask for this job.

As for the problem of connecting with the inland railway, it is better to solve it, anyway, it is a broad gauge, and then add a rail to the sleeper.

As for the safety of running two standards on one track, that's the engineers' business, and his second master doesn't have the leisure to worry about this.

In this way, the second master simply and rudely decided the railway line standard of his military group.

After instructing the telecommunications department directly under him to send a telegram to the railway construction headquarters, the second master beckoned Zhang San of the guard regiment into his tent, because he still had some small matters to deal with in Zhangjiakou.

After the two talked secretly for an hour, Zhang San hurried back to the regiment headquarters. After returning to the regiment headquarters, Zhang San immediately dispatched a company of troops to drive a truck straight to Zhangjiakou City, and posted notices everywhere in Zhangjiakou, declaring that the soldiers of the New First Army had been kidnapped and disappeared by bandits.

As a result, the city of Zhangjiakou was boiling over, and the figures of the new First Army searching for missing soldiers were everywhere. What makes the people of Zhangjiakou strange is that the new army, which set up checkpoints at the pass leading to Zhangjiakou, does not check goods or search people; Only check the stinky feet of each person who passes by~~~

And what is even more strange is that ~ the new army, which searched door to door in the city, intentionally or unintentionally narrowed the scope of the search to Leshantang, a pharmacy in Zhangjiakou City.