Marching and arranging formations has been a compulsory military subject since ancient times.

One of the key factors in defeating the enemy in the era of cold weapons has been recorded since the earliest Battle of Makino. "Liutao", "Wu Zi", "Sun Bin Art of War", "Wei Xuanzi" and other military books are specially divided into large books. The outstanding military wizards of the past dynasties also attached great importance to this way: the "New Book of Mengde" written by Cao Cao, Emperor Wu of Wei, has a special chapter on the method of marching and arranging the formation; Zhuge Liang, the prime minister of the Shu Han Dynasty, deduced the art of war and made eight formations, and the eight formations of Wuhou were passed down to future generations and had a wide influence. "Tang Taizong and Li Weigong Ask Right" deeply studied the formation, and discussed the military formations in the world. Yue Fei of the Southern Song Dynasty left a fragment of the art of war to teach the formation. Qi Jiguang of the Ming Dynasty wrote "The New Book of Discipline and Effectiveness" and "The Actual Record of Military Training", explaining the formation in detail, and he also created his own "Mandarin Duck Array" and "Sancai Array", which showed great power in the War of Resistance against Japanese Aggression.

Especially in large-scale operations, if we are not proficient in formation, and reasonably deploy tens of thousands or even 100,000 soldiers and horses, we will only make a mess.

It is this knowledge that Luo Shixin lacks, and it can be said that Li Jing's letter taught him a crucial lesson in his military career and introduced him to the door of a famous general.

Luo Shixin did not hastily directly let his soldiers practice according to the Mo Dao Army formation, although the set of formations created by Li Jing is simple and easy to understand, but it contains a variety of changes, and the strengths of his Mo Sword soldiers complement each other. He didn't intend to be a fat man until he figured out the way.

For the next period of time, most of Luo Shixin tirelessly held Li Jing's books and researched.

He is smart and studious, and he can quickly grasp new things, and the books written by Li Jing also take into account the fact that Luo Shixin's foundation is still shallow, and every word of the popular confession is simple and easy to understand, and the key profundity is full of pictures and texts.

Luo Shixin pondered for three days, and he knew the Modao formation created by Li Jing in his chest, personally took over the Modao training, and integrated the formation into daily training.

At first, the generals were a little uncomfortable, poorly coordinated, and a little chaotic, but as they ran in day and night, Mo Dao, strong crossbowmen, archers, spearmen, knife soldiers and other types of troops moved as they wished, interspersed with different formations according to different situations of the illusion, making the Mo Dao Army, which was mainly based on change, run more smoothly.

Luo Shixin could already imagine how his Modao army would be reborn after the Mo Sword Army completely adapted to this formation, making the Turkic cavalry terrified.

**********

Guizhou.

After Li Jing finished handling military affairs, he returned to the mansion feeling a little tired.

Zhang Chuchen, the red-haired woman, came up with a distressed heart, rubbed her shoulders for her husband's wide clothes, looked at the faint white hair on her sideburns, and complained: "People are in their early fifties, why bother so hard." ”

Li Jing closed his eyes and enjoyed it for a while, and said: "Lingnan here is not convinced by Wang Hua, you can't do it without care!" Don't look at the Tang Dynasty now that it is peaceful and the world is unified. However, the potential worries have not been eliminated. The northern Turks have become a great trouble, and the southern assistant Gongyou has different intentions, and at most a year, he will inevitably rebel. Lingnan is far south of the Tang Dynasty and is connected to the potential forces of Fu Gongyou. Before he rebelled, if he couldn't let Lingnan return to his heart. In the future, if it is reversed with Fu Gongyou, it will be a huge military disaster. At that time, the Northern Turks and the Southern Auxiliary Gongyou will be harmed at the same time, and the consequences will be incalculable. ”

Zhang Chuchen also had a reason for her husband, but she still hummed: "There are so many things in the world, and it is Turkic and Lingnan Fugongyou, so you are the only one to worry about." Although she complained, there was a faint sense of pride, her husband was like a god, the overall situation of the world was in his chest, and he was almost silent about the future direction.

"That's right!" Zhang Chuchen suddenly remembered something and said, "Brother Jing, a letter from Jingzhou sent the wrong letter to you, I'll go get it." Zhang Chuchen has been married to Li Jing for many years, and he has never been able to erase the traces of the rivers and lakes, and he has never been a good wife and mother, and he has only one "Brother Jing" for Li Jing from beginning to end, even in front of the son of outsiders, he never cares about the eyes of the world.

Li Jing is also open-minded and carefree.

"Could it be His Royal Highness King Qin?" Li Jing guessed casually, more than a month ago, he was still inspecting the history of Jingzhou's assassination. However, because he noticed that Fu Gongyou was anti-minded, in order to ensure that Lingnan was safe, he personally crossed the Nanling Ridge and arrived in Guizhou to pacify the south.

Li Yuan re-appointed Li Jing as the ambassador of Lingnan Province and the governor of Guizhou, which is no longer the history of Jingzhou.

Li Jing had a close relationship with Li Shimin, in the early years, Li Jing noticed that the Li family was secretly recruiting troops and horses, waiting for an opportunity to rebel, and planned to advertise secrets to Yang, but due to the chaos in Guanzhong, the road was blocked, but the Li family was captured, intending to kill Li Jing. It was Li Shimin who rescued Li Jing from the knife and praised his intelligence and courage to admit him to the shogunate.

Li Shimin admired Li Jing's talent, but Li Jing was useless under Li Shimin.

Both of them are commander-level figures, Li Shimin has his style in the army, and Li Jing also has his own style, Li Shimin has no reason to wronged himself and the necessity of accommodating Li Jing has also caused an embarrassing situation where he has great talent but has no opportunity to make meritorious contributions.

Li Shimin really couldn't bear to bend his talents, gritted his teeth and gave up Li Jing, just because Ba and Shu were in turmoil, so he recommended him to Li Xiaogong.

Li Jing also jumped nine days to pacify Xiao Milling and appease Lingnan, and his talent was displayed.

Li Shimin knows Li Jing's talent very well, and Li Jing also feels that Li Shimin knows about it, and there has always been correspondence between the two. He knew that Li Shimin was far away in the north, and he didn't know the situation in Chang'an for a while, and there was a possibility that he would send it wrong.

Zhang Chuchen didn't know either, so he took the official document and looked at it, and said with a smile: "You guessed wrong, it's Luo Shixin...... Oh, why is he? She heard Pei Qingyi mention this name in the letter, which said that Luo Shixin was only twenty years old, but he could be a bearded guest, and he was a great young hero.

Li Jing was moved and said with a smile: "Bring it quickly, show me!" ”

Zhang Chuchen sent it over.

Li Jing couldn't wait to open the official document and read the letter carefully.

The first part of the letter is some words of gratitude, Luo Shixin's literary skills are limited, and he does not produce any subtle words, so he uses the most confessional words, but reveals a sincerity. Afterwards, he had some understanding and experience of the Modao Formation, hoping to get his guidance, and finally directly asked some difficult questions in the military.

"This kid really knows how to climb the tree!" Li Jing said, but without any displeasure, he went into the study, repeatedly pondered the paragraph in his heart about the Modao Formation, and after careful consideration, wrote down his opinion. For those military difficulties, we also seriously answered. After writing the letter and encapturing it, I thought about it and walked to the bookshelf on the far right, and took out a newly sealed book, with no pattern on the cover, only the simple three words of "Six Army Mirrors", which were put together in a sealed bag.