The moon was sparse, and the night was very quiet, but Wang Rong knew that the enemy soldiers were approaching, and it was expected that tomorrow morning they would be out of the vicinity of his current position.

The soldiers who were not on duty all rested early, and even the pro-soldiers of the Chinese army standing guard were standing or sitting at this time. Wang Rong looked out of the open tent and saw a soldier sitting next to the fire, holding a needle and thread, silently sewing the clothes on his body. The soldier was stocky, but very young, and looked like he was in his teens.

Wang Rong stretched out his hand and rubbed his neck, and continued to write and calculate on the simple board and paper.

Shortly after the flat-firing bronze cannon was built, there was a gun watch. The so-called gun table is a table made by using the parabolic formula after specifying the gun size, charge, and iron pellet weight, and comparing the range of each elevation angle with the calculation and testing.

However, this cannon table is based on a flat table. Now Wang Rong is temporarily calculating the cannon table in the case of a slope of more than ten degrees, because of the urgency of time, he has just set up camp today, so that he has not yet calculated it when it gets dark.

The original flat cannon table was made in the school yard of the Forbidden Garden in the northern suburbs of Chang'an City.

First of all, the gravitational acceleration is calculated, and the data in the original formula cannot be used, because there is no comparison between the unit meter, the second and the real-world measurement.

The method is to re-experiment, and the measurement of time is an hourglass with a scale, measured in the flick of a finger (approximately equal to the second); The units of length are zhang, ruler, inch, minute, centimeter, millimeter, and wire, of course, the so-called precision unit can be ignored, with the current artillery technology and measuring tools, too small units are meaningless at all.

The acceleration due to gravity can be calculated by measuring the time and height of the iron ball falling from the tower, and averaging it several times.

This is followed by the calculation of the muzzle velocity vector generated at the elevation angle, which is also very simple. The elevation angle is modeled with a wooden protractor, and the trigonometric function value is only needed to draw a triangle according to the angle and multiply and divide by the length of the figure on each side.

In this way, the cannon table can not only have a simple comparison table, but also set a formula. Temporarily found angles that are not on the gun table, can be quickly calculated on the spot with formulas.

When there is a slope on the actual battlefield, it can also be calculated using the basic kinematic formula to form a new gun table.

Regarding the measurement of the range length of the battlefield, Wang Rong probably remembered that in modern times, a gun mirror was used. And now obviously he doesn't have this thing, and he can't do it, so his method is relatively stupid.

There are two methods, one is to choose those people with a strong sense of distance to estimate with their eyes, such as those who observed the distance and proximity on the city wall for the catapult when they used to defend the city; The second is to use a rope to measure the integer distance on the battlefield, nail the wooden stakes, and use those wooden stakes as a reference when the war starts.

Now there are a lot of wooden stakes on the slope ahead, which are nailed during the day, and they are sparse. It is estimated that the enemy army does not know what to do, because there is no defensive effect.

Just then, a man approached. Wang Rong was instinctively more alert in an unfamiliar place, and when he looked up, he found that it was a scribe in a round-necked green robe who came over with hot tea.

He ignored it, and then suddenly remembered something, and looked up and asked, "Do you know how to read and do arithmetic?"

The scribe hurriedly bowed and said, "Go back to the saints, the villain will be."

Wang Rong immediately beckoned: "You come and help me calculate."

The scribe stepped forward cautiously, and glanced at the ghostly drawing of symbols and Arabic numerals on the table, and his face looked like he was about to cry.

Wang Rong raised his eyes and comforted, "Don't worry, I will teach you to use the calculation process, you just need to calculate according to the process."

Wang Rong talked with him for a while, and the scribe gradually realized that he only needed to add, subtract, multiply and divide a specific number. The scribe took his leave of the tent again, and took a little of an abacus.

Soon there was a skillful "pop" sound in the tent of the Chinese army, and the scribe calculated very quickly. The abacus is like an ancient version of the calculator, and the efficiency is much higher than that of the pen, which Wang Rong admires deeply.

The night was uneventful, and as soon as the sky was dark, Wang Rong woke up to the familiar rhythm of drums and trumpets outside the barracks, got up and dressed in armor. A group of soldiers took care of him.

Wang Rong asked, "The enemy has arrived?"

The scribe who had helped him with his arithmetic last night replied, "Returning to the Holy Place, its vanguard arrived as scheduled, and occupied the high hillside to the west."

Wang Rong stretched out his arms, and several guards hurriedly put a clean liner with green salt washing and fragrance on his body. Wang Rong's expression was calm and calm, his eyes were calm but sharp, and his spirit was adjusted to the best state.

He looked very calm, and asked the scribe, "By the way, I forgot to ask you last night, what is your name?"

The enemy soldiers approached under their noses, and the emperor was still in the mood to care about a small official, and his calmness infected everyone.

The scribe hurriedly replied, "If you go back to the saint, the villain's name is Zhang Fu, a person from Bashu."

Wang Rong said, "Your official words are very good."

Wang Rong, with the help of everyone, quickly put on the delicate armor and the dark purple cloak. He never wore yellow clothes or armor on the battle array, which was too bright and easy to attract the care of the enemy soldiers under special circumstances.

The belt with a gilt buckle was tied around his waist, and Wang Rong lifted his sword and put it on, and then washed and ate half-full.

He walked out of the tent neatly and stood on the slope for a while. At this time, the sky is brighter, in the early spring morning, the ravine is still shrouded in milky white and light mist, Wang Rong looked up at the sky, the weather is very good today.

There was no fog on the top of the hill to the west, and Wang Rong looked over and could see that there were flags on it, and there were figures standing on it.

Most of the people who stood on high places before the war were commanders and generals of the coalition forces. Wang Rong had been there yesterday, maybe the footprints were still there, obviously guessing that King Pusha might also be there, Wang Rong had a very close feeling in his heart.

Different people stand on the same land, and their positions will be different, but what is King Pusha thinking now?.

Wang Rong looked at it for a while, and the generals came to the Chinese army one after another. The forbidden army's battle formation habits for many years still retain a lot, first to the main general, and then to deploy the battle formation.

Hundreds of people came, and almost all the generals above the battalion general arrived. Everyone watched the battle formation on the opposite side while waiting for Wang Rong's order.

"Last night, the army had a meeting, and everything was deployed as planned." Wang Rong said.

At this time, the generals fell silent.

Wang Rong continued: "According to the truth before the battle, the generals can reasonably make a decision on the spot. However, bronze cannons and arquebuses are not allowed to be used without permission! You should remember clearly that the signal for the use of firearms is "Ambush on All Sides"; The signal for a counterattack is the General's Order!"

The generals shouted in response.

Wang Rong paused for a moment, and said in his heart: A decisive battle like this can only happen if you and I are willing on both sides, if Pu Sha and the Qiangqi coalition are unwilling, can they concentrate the army here? This is an opportunity, Wang Rong is eyeing the cavalry of the coalition army. Especially the Iron Cavalry of the Badbeard Army, because in his eyes, only the elite cavalry of the Badbeard Army can be regarded as a qualified organized cavalry army!

It is necessary to lure the Badger Army to ride up before the war can really begin.

Wang Rong's expression became solemn, and he said, "The forbidden army is composed of the most elite sons and daughters in the Tang Kingdom, and the equipment, food, and clothing are the best, and they are the people's fat and ointment for countless people in the Tang Kingdom!"

This was immediately serious, and the generals straightened up in awe. People-oriented, is the Qin Dynasty had the idea, Wang Rong is still very down-to-earth.

Wang Rong said loudly: "The sons and daughters came here over the mountains and mountains, not to make a fool of themselves and make people laugh, but for the face of my Tang Dynasty, not to live up to the ardent expectations of me and the people of Limin. For the sake of dignity, for the protection of the country and the people, and for every inch of the land left by our ancestors, I wish you to kill the enemy with all your might!"

People responded.

Wang Rong didn't say much after hearing this, and ordered, "Prepare for war!"

The generals shouted, "Serve the Emperor!" "God bless my emperor, long life knows no bounds!"

The mountains were full of marches of troops. Di Suwen looked at the momentum of the Tang army in front of him and the neat military appearance, and said, "The number of enemies is only one-third of ours, but this is a vicious battle."

The number of Tang Army's infantry cavalry stationed here is only more than 50,000 people, while the coalition army is about 150,000!

King Pu Sha asked suspiciously, "The Tang army came here first, why didn't you choose the mountain we occupy, but the place opposite?"

Di Suwen didn't understand it at all, and only said, "But the opposite side is open, and you can fight happily!"

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The army cavalry was mighty and mighty, and they arrived at the battlefield one after another, with greater momentum, many men and horses, and a wider horizontal expansion, gradually forming a semi-arc like a half-arc, forming a semi-encirclement state on the flanks of the Tang army.

More than 200,000 horses and horses gathered in this place, and the noise between the ravines was unusual, and the flags were like clouds, and the scene was very grand and spectacular.

The two rangers had clashed in the ravine between the two mountains, and it was common to see the figure of a knight drawing a bow passing in the distance.

The coalition forces were overwhelmingly superior in numbers, and both Di Suwen and King Pusha decided to take the initiative to attack. "The frontal slope is the slightest, so that the infantry of the front army can approach and then form a formation, and then send out the infantry to attack. The cavalry flanked and flanked and stood still.

Although there are some preparations, the horses of the Pusha Army may be unwell in the face of the explosion of firearms, and it is most appropriate to use infantry against the enemy's infantry phalanx first."

Although King Pusha was the supreme commander of the coalition army, he also believed in the experience of the generals of the Badbeard Army, so he took the advice.

Di Suwen also said: "The Tang army is smaller in number, but the army is neat and tidy, and if it can't be attacked at one time, it can be replaced by men and horses to attack in turn."

After some preparations, the infantry of the Pusha Bearded Coalition moved forward from the hillside, they were also a phalanx composed of groups of people, with different clothes and armor, many of them carrying bows and arrows, and various weapons, but each of them also had a lot of brute strength.

The Tianshan Mountains produce iron, and Pu Sha's foot soldiers have a high rate of armor, but they are obviously unable to organize a blacksmith workshop to process the armor, and the armor worn by the soldiers is chaotic, and they are all homemade at home.

King Pusha is still very confident, indeed, it is not possible to fight well dressed in battle, it still depends on the courage of people!

A large number of foot soldiers spread down the mountain, like a black torrent. King Pusha looked at this spectacular scene, and he was very excited and nervous. Everyone comes to fight to win!