Sun Tzu's Art of War is worthy of being a famous book, and Li Yao was deeply attracted as soon as he read it.

There are thirteen chapters in this book, namely, the beginning of the plan, the battle, the strategy, the military form, the troop situation, the virtual and the real, the military battle, the nine changes, the march, the terrain, the nine places, the fire attack, and the use of the room.

The first thing I said was that war is the most important matter of a country, and it has a bearing on the life and death of the military and the people and the survival of the country.

Li Yao's goal for the upcoming war is indeed unswerving, and if he wants to develop, it is impossible to rely on the territory of Yi County alone, to tell the truth, that is, relying on the land of Yi County alone, even a million ordinary people cannot be fed.

So Li Yao had to start studying the battle against Yiguo, fortunately, from the information from the thin monkey, Yiguo's regime was corrupt, and the court had been controlled by eunuchs, which was good news for Li Yao, but as the military generals who founded the country, they had always ignored the eunuchs of Yiguo. This made Li Yao very worried.

If the Yiguo military general is really a battleground, it is indeed difficult to deal with, even if he has a firearms unit, it will be a big challenge.

Fortunately, the generals are limited by civil officials, after all, the armament of the soldiers, the money needed for logistics are controlled by the chief financial officer of the household department, and the household department is the descendant of the eunuchs, not to mention corruption, it is said that his family's mansion alone is larger than the palace of King Yi, and the silver that is honored to the eunuch godfather every year is more than the national tax!

Although this is just heard, but there is no wind and no waves, there is such a big corrupt official leader, Li Yao naturally has a way to guide the weakening of the power of the generals.

Sun Tzu's Art of War Chapter 13, in use, Li Yao likes this the most, as the so-called knowing oneself and knowing one's opponent, invincible in a hundred battles.

What Sun Tzu says in chapter 13 is that if you want to fight thousands of miles away, if you use 100,000 troops, the cost of the people, the expenses of the state, will cost at least 10,000 gold a day, and there will be 700,000 families fighting in the front and preparing for war in the rear, and the soldiers will be running around on the road.

700,000 families, what kind of concept is this, if a family of four, it is 2.8 million people, and the entire Yi County adds up to only 1.3 million, if everything depends on local supply, the 100,000 troops of the Yi County Legion can not only drag themselves down, then they can really drag themselves to death, that is really the first to die before they get out of the division.

Therefore, spies are necessary for Li Yao, and the scouts of one of the blind man's brigades are the spies that Li Yao threw to Yiguo, and this kind of spy is called Shengjian in Sun Tzu's Art of War.

There are five ways to use spies, the first is the countryside, that is, using the enemy's fellow villagers as spies, the second is the inner room, which is to use the enemy's officials as spies, the third is to make the enemy spies for our use, and the fourth, the dead room, refers to the creation of false information, through our spies to tell false information to the enemy spies, to induce the enemy to be deceived, once the matter is revealed, then our spies can die for a lifetime, and the use is called death. The fifth type of life is the blind man's scout, which investigates the enemy's situation.

Sun Tzu said that there is no one in the army who is more worthy of being close than a spy, there is no more generous reward than a spy, and there is nothing more secret than a spy.

A person who knows how to use the space must be wise, benevolent, generous, and well-scheming.

Spy is indeed a branch of the army that can reduce costs, Li Yao's money is not much, but he does not treat the blind scouts at all, this time he gave the blind man 300,000 taels of funds, but Li Yao did not dare to give less at all.

Without adequate funding, it is absolutely impossible for a spy to move an inch. Don't dare to scout the people who spend money on the top, and the money will definitely be more later! Li Yao knew this, so as long as the blind man asked for money, Li Yao would definitely try his best to satisfy it!