A Man of Science and Engineering in Troubled Times Wandering in the Late Qing Dynasty

Chapter 82 Farewell
In the ballistics class on the second day, when Li Chun introduced Li Yu again, the students in the Surveying and Mapping Department were very welcoming.

"Great! I feel that the level of Li's teaching is higher than the previous teaching in Germany."

"And it's too thorough, without any twists and turns."

"I really don't want to hear German Chinese anymore!"

"But why can't I still understand?"

"That's not Li Jiaoxi's problem, can you be smarter!"

Li Yu smiled at everyone: "I will teach today's course, mainly about some mathematics and physics application knowledge in ballistics. As for how to use it, other teachers need to teach it in person."

Li Yu quickly drew the coordinate axis, and then started to talk about it with trigonometric functions and basic calculus.

Although these things are no strangers to modern high school students, a bunch of seedling warlords are almost out of control.

Li Yu didn't dare to go too deep. After deriving the function of time in the ballistic flight coordinate system, he didn't go on, but went back and deduced it again.

This is his understanding as a student.Because when I was in class in college, the teacher was really too fast, and I couldn't keep up with the rhythm if I didn't pay attention, so I had to work harder to learn after class.

However, the following people do not have much foundation in mathematics and science, and their levels are uneven. Li Yu can only explain it as superficially as possible.

Even so, many people still didn't understand, and they asked questions one after another, and Li Yu could only answer one by one, and he had to calculate the formula for the third time until he was almost done.

"Okay, today's class is over. Today's content is more difficult. In order to consolidate it, I will assign some homework." Li Yu wrote a few questions on the blackboard.

To take care of their levels has been very simple.

"You copy it down, the ballistics class the day after tomorrow will be checked."

Li Yu chuckled in his heart, it was hard for these great warlords of later generations to feel so refreshed.

However, the time after class is not so free. The "good student" Sun Chuanfang would come to Li Yu for advice every now and then, and even took the original German textbook to ask Li Yu directly for answers.

Li Yu finished the course that would have taken more than half a semester in less than a month, and even conducted his own small research during the period.

The writing on the blackboard of his lectures has been sorted out by Wu Peifu and has become the classic lecture notes of "Basic Surveying and Mapping" and "Basic Ballistics" in the crash course of the entire Beiyang Army.

Later students even hand-copied Li Yu's course handouts, and wrote "Li's Basic Surveying" and "Li's Basic Ballistics" on the cover.

Until the later Baoding Military Academy, Li Yu's lecture notes were still used in these two courses, and its influence can be imagined.

But Li Yu doesn't know this yet, he only knows that he can finally leave.

Because those German professors were on vacation for a month and finally came back!Judging by their skin color, they should have gone to the far south. They are so nourishing!It is said that the Germans would not be able to beat the holidays on the Soviet-German battlefield. It seems that it is really possible.

Knowing that Li Yu was leaving, Li Chun was still very reluctant.As a member of the academic department of the coaching department, he has seen many teachers, including those from Germany and Japan, but this is obviously the first time he has seen one at Li Yu's level.Not only the academic level is high, but also the problems are viewed from a strategic point of view, and the explanations are very transparent.

With this kind of teaching, he had a hunch that this group of students would definitely be great in the future.

However, he also knew that it was impossible for such an educated man to waste his time in the crash course.

Yuan Shikai also knew that Li Yu was leaving, so he even arranged a banquet to see him off. Feng Guozhang and Li Chun, as the relevant persons in charge of the school, naturally also attended.

Yuan Shikai held up his wine glass and said: "During this period of time, thanks to Mr.'s teaching, my students in the Beiyang Army Crash School have benefited greatly. I am very grateful!"

Li Yu said: "It's good to have a little help."

Yuan Shikai continued: "Sir, why don't you just stay in our army? Everyone in Beiyang knows that I, Yuan, treat educated people with great respect. You can definitely skyrocket in our army."

Yuan Shikai really attached great importance to intellectuals, otherwise Xu Shichang would not have been promoted so quickly after he arrived in Beiyang.

But Li Yu obviously didn't care about that, he replied: "Thank you, Marshal, but I already have a personal plan. If there is a need in the future, I will definitely help again."

Naturally, Yuan Shikai couldn't force Li Yu to stay, so he could only say: "It's really a pity, but Mr. Beiyang has done his best for me. If there are any difficulties in the future, I will definitely help Beiyang to the end."

In the final analysis, Beiyang is also the most powerful force in the next two decades. Perhaps with their support, some things will be less resistant.

And... and Li Yu also served as a teacher of the second generation of warlords such as Wu Peifu and Sun Chuanfang, so it must be considered useful after all.

Yuan Shikai didn't miss any opportunity to find out the shortcomings of his Beiyang. He asked, "Do you have any suggestions and opinions on all aspects of our Beiyang army?"

Yuan Shikai's question is not easy to answer. In fact, Yuan Shikai himself should be the most aware of this kind of management problem, so Li Yu said: "If possible, a small suggestion. I privately think that unified standard weapons are more conducive to training."

During this period of time, Li Yu only saw four or five models of rifles in Li Chun's hands. He couldn't be like the later generations of Ah San, who turned the standard weapons into "Wan Guo Brand".

"It makes sense," Yuan Shikai nodded. "I've been thinking about this matter, but I haven't been able to think of any way to completely avoid risks, but I will definitely focus on this matter."

Li Yu said: "In addition, I have observed that although there are many military schools, there seems to be no school for telecommunications."

Yuan Shikai wondered: "Telecom? What telecom?"

"It's a telegram signal, the commander can understand it that way."

Feng Guozhang next to him interjected: "Now erecting telegraph cables is very difficult. We don't have talents in this field, and the cables are expensive. Once the battle line is too long, it will be difficult to repair the cables if they fail."

Li Yu said: "So the school must be built as soon as possible, and the radio will soon be applied. If there is no relevant supporting personnel, it will become a blind man on the battlefield."

"Wireless?" Yuan Shikai asked in surprise, "How does Wireless send telegrams?"

Li Yu said with a smile: "The West has already started to invest in this area, and I believe it will be promoted in a few years."

"There is such a technology?" Yuan Shikai still didn't quite believe it.

Li Yu affirmed: "Of course, this is the future!"

After this period of time, Yuan Shikai believed in Li Yu at least in terms of science: "Okay, then I will follow my husband's instructions and establish a telegraph school as soon as possible."

Li Yu said: "Perhaps it can be called the School of Telegrams and Signals."

Yuan Shikai looked at Li Chun: "Write down this name. After the school is established, I will ask Mr. Li Yuxiao to write a plaque!"

Li Yu couldn't even refuse, the key was that he couldn't write with a brush!
After eating, Li Chun gave Li Yu a total of 1500 taels of silver notes, "It's the commander's kindness! Mister, don't forget Beiyang!"

Good guy, so much money, almost double, of course I can't forget it.

Li Yu was really about to leave, but what he didn't expect was that Wu Peifu, Sun Chuanfang, Li Jinglin, Cai Yubiao and other students from the surveying and mapping department escorted him all the way to the station.

Li Yu was even a little moved, and shook hands with the students one by one to say goodbye.

I really hope that they will be good people while being warlords in the future, that would be the great fortune of the country.

(End of this chapter)