In Chen's plan, the courses of future apprentices will be divided into three courses: "Mathematics", "Thought", and "History".

Needless to say, mathematics is simple arithmetic and geometry, with some modern drawing methods inserted in between, and some concepts about errors and tolerances are instilled in the apprentice.

"Thought" is to instill into these teenagers some of the essence of modern thought that Chen Xian knows.

When formulating the syllabus of the course "Thought", Chen Xian felt that he hated the lack of books until he used them.

Chen Xian is a typical science student, in the humanities, he is only interested in history, almost no reading some modern ideological and philosophical works, the relevant knowledge he masters, the source is very scattered, completely unsystematic, and a lot of specious, even he does not know whether it is correct.

In the end, after thinking about it, he could only use the old method of using noun explanations to write an outline, and present his scattered knowledge in a scattered manner.

"History" is Chen Xian's strength, but he teaches history not simply to let the apprentices understand history, but to serve the "ideology" course, on the one hand, through the cruel historical truth of the black and black feudal society, on the other hand, through the comparison of history, let the teenagers know what the so-called "justice", the so-called "cooking", and the so-called "contract" are, and what is the meaning.

Compared with education, Chen Xian was more satisfied with the military training of the teenagers.

He spent a month training the teenagers in formation.

Fortunately, the young man has a good memory, and in just one month, the apprentices have mastered the left and right directions and various passwords, and can follow Chen Xian's password skillfully forward, stand, turn left (right) (back), and turn left (right) to walk.

After completing the formation and formation training, Chen Xian began to train the teenagers in the military formation.

The reason why Chen Xian divided the teenagers into a team of eleven people was very simple, the Mandarin Duck Formation was a team of eleven people.

As a lover of ancient wars, it was certainly impossible for Chen Xian not to know the famous Mandarin Duck Array.

The Mandarin Duck Formation is a kind of evacuation battle formation used by Qi Jiguang, a famous general of the Ming Dynasty, to deal with the Japanese Invaders, and it has made a great name in the Ming Dynasty's War of Resistance against the Japanese.

According to historical records, in the early stage of the Ming Dynasty's Japanese rebellion, dozens of Japanese soldiers were able to kill the city of Nanjing, and thousands of Ming troops were defeated along the way, which shocked the whole country of the Ming Dynasty.

However, when Qi Jiguang trained into the Qi family's army, as soon as the mandarin duck array came out, with thousands of Qi's army against thousands of Japanese invaders, not only did they completely annihilate the Japanese invaders, but their own casualties were only a few!

Such a casualty ratio is extremely rare in the entire history of warfare.

Whenever there is such an exaggerated casualty ratio in history, it is often the elite who meet the rabble, but the Japanese are obviously not a rabble, these pirates with the defeated Japanese samurai as the core, have quite strong combat effectiveness, otherwise it would not have shaken the whole country of the Ming Dynasty.

The comparison of the achievements before and after the Pingwei War made Qi Jiguang and his mandarin duck array leave an extremely dazzling light in history.

As an ancient military enthusiast, Chen Xian certainly would not fail to understand the Mandarin Duck Array.

When he was in college, for this mandarin duck array, Chen Xian and netizens tore it up no less than ten times.

Once he was slapped in the face and beaten too hard, Chen Xian was angry, found "Ji Xiaoxin Book" on the Internet, and bought an ancient military book introducing the Mandarin Duck Formation, and worked hard to study this unique ancient tactic.

The more he understood, the more Chen Xian admired the ancient military strategists who created this formation.

The creators of the Mandarin Duck Formation synthesized almost all the situations in the Japanese Wars to create this battle queue that could almost perfectly deal with the Japanese Wars. With shields, spears, and other weapons of all lengths and shorts, it is almost flawless in the face of small-scale infantry combat.

The basic formation of the Mandarin Duck Formation is two columns, a long card (a large rectangular shield that can almost cover the whole body of the shield hand), a rattan card (a round rattan shield) hand standing at the front of the column to provide defense for the comrades behind him, two wolf hand behind the shield hand to assist in defense, and then two rows of four pikemen holding six-meter bamboo pole spears, only responsible for assassinating and injuring approaching enemies, and at the back are two boring palladium hands, responsible for covering the flanks and rear flanks. The entire team also has a captain in iron armor who is highly skilled in martial arts, standing between the two shield players, or sitting on the side of the rattan player, to fill in the gaps in the team.

The mandarin duck formation can also easily transform from a column to a horizontal formation, only need to take two steps forward from the wolf's hand, walk to both sides of the shield hand, plus the captain in armor is in the center, five people form the first row, these five people are all defensive roles, and the first row formed is just to block the enemy, creating a chance for the spearmen behind them to kill the enemy.

The two pikemen in the fourth row took two steps forward and moved to either side of the two pikemen in the third row, and the last two rakers stepped forward and walked to either side of the four pikemen to provide cover.

In this way, the mandarin duck array of the two columns can become two horizontal rows in the blink of an eye.

In addition to the vertical and horizontal formation, the mandarin duck formation can also be turned into four rows, which can be turned into a front defense with shield players, wolf squirters and captains in the second row, four pikemen in the third row, and two rake hands in the back row of the line to provide cover for the pikemen.

The Mandarin Duck Formation can also be divided into two or three squads to cope with complex terrain or the needs of pursuit.

In short, the Mandarin Duck Formation is a kind of small infantry array with a reasonable combination of long and short offense and defense, and is flexible.

Of course, the Mandarin Duck Formation is not a universal formation, this formation is only suitable for infantry conflicts in complex terrain, and is not suitable for large-scale multi-arm battles on the plains, this formation cannot cope with the impact of cavalry.

However, with Chen Xian's current situation, there is no need to consider a large-scale war, and the Mandarin Duck Formation is just right.

In the Mandarin Duck Array, two relatively rare strange-shaped weapons were used, that is, the wolf whith and the boring palladium.

Chen Xian found that the core of the mandarin duck array tactics was the wolf whith and the boring palladium.

Let's talk about the wolf first; The large bamboo that has not shaved its branches and has an iron spear head on the top, which is the wolf whire.

Before seriously studying Ji Xiao's new book, Chen Xian, like most netizens, thought that the wolf was just to block the Japanese samurai's big sword, so as not to be killed by the fierce Japanese samurai.

This kind of strange-shaped long weapon with many branches can certainly stop the samurai who use the Great Taidao, but if you think that the wolf is only to resist the Taidao, then you are wrong.

The first thing you have to know is that the main component of the Japanese army was not the samurai, but the ordinary infantry, the so-called ashigaru, and the main weapon of the ashigaru was the spear, not the expensive daidaito.

Samurai were generally officers in the military, and even samurai, not all of their main melee weapons on the battlefield were daidasa, with spears and long-handled knives (naginata) being the mainstream.

Even the regular Japanese army could not use the expensive sword as the main battle weapon, let alone the pirates, and it is clear that the cheap and practical spear was the main battle weapon of the Japanese invaders, as can be seen from the many paintings depicting the war of resistance against the Japanese in the Ming Dynasty.

If the wolf can only resist the Taidao, it is obviously not enough, he must be able to resist long-handled weapons such as spears.