"Humph! What is that tax? Once we disperse our forces, Qin Feifei will attack Xijing nine out of nine, and now he has occupied the north of the Great Wall of Datong Mansion, as long as he captures Xijing, the city of Datong Mansion, his situation in the north will be completely stable! ”

Long Lin Qianyu looked at these so-called guild executives with disdain, if it weren't for the old qualifications, he would have let them go a long time ago with the minds of these people.

"We have suffered heavy losses in Xijing, we have only occupied it for a few days, and it is indeed too early to say goodbye, and I plan to apply to the board of directors for some funds to tide over this food crisis." Long Lin Wushuang said lightly.

Hearing that the chairman said that he wanted to apply for funds, the dissatisfied expressions of the surrounding backbone players were slightly restrained.

"However, it will take some time for the funds to be applied, and there must be no mistakes in stabilizing work and food supplies during this time!"

……

Ling Chong seemed very busy after working part-time as the head coach of the Tenglong Legion, first of all, the war horses were suddenly sufficient, and he had completed the training of seven hundred and twenty people every day. Among them, the Golden Fire Cavalry and the Tenglong Legion each accounted for half, and all of them were trained by the seventh-order village warriors.

Qin Fan was soon teleported back to Tianya Town by Cai Xu with Mu Qingyao, he first checked the training of the Tenglong Legion, and then went to the back mountain to see Lu Diaoying.

Lu Diaoying's rocket battalion has begun to take shape, currently has 200 rocket vehicles, 1,000 sergeants equipped with fire dragon water cannons, Qin Fan transferred all the 3,000 people who had risen to the ninth rank in Tianya Town to Lu Diaoying.

Entering the cave, Qin Fan found that Lu Tie and Lu Diaoying were studying against a brass hollow tube thicker than a thigh, which was hollow at one end and sealed at the other, with a small square hole in the back.

"Cannon?!" Qin Fan blurted out.

Lu Diaoying was stunned when he heard Qin Fan's words, and said in surprise: "How does Gongzi know that this is a cannon?" ”

"Uh...... It's just a casual talk, so what exactly is this? Although Qin Fan guessed eight or nine or ten, he was still very curious.

"Let's let the old man Lu talk about it." Lu Diaoying didn't steal the credit at all, Lu Tie smiled: "Xiao Lu is modest, childe, Xiao Lu is not satisfied with the efficiency and range of the catapult to launch the thunderbolt cannon, so he offered to let me find another firing mechanism." I rummaged through the ancient books of the previous dynasties and found that in the Han Dynasty, there were skilled craftsmen who built pipes with iron and fired stone bullets with alchemy and gunpowder. Inspired by this, Lu Diaoying and I came up with the idea of this second-generation thunderbolt. ”

"Sure enough!"

Qin Fan didn't expect that these two ninth-order bigwigs would stay together, and they would actually be able to collide with fierce technological sparks. Artillery, he remembered that artillery first appeared in the Southern Song Dynasty, invented by a person named Chen Gui, and it was also called thunderbolt at that time.

Lu Diaoying took over and said, "Childe, we found that the Thunderbolt cannon barrel will crack due to huge earthquakes and high temperatures after firing projectiles many times. Pig iron cast pipes are the most inferior quality, such as made of fine iron or 100 forged steel, the cost is too high, and the output is low. Now we have solved this problem with the method of copper-clad iron, but the range is a big problem, and now the range is just 200 paces. ”

Two hundred steps, only 100 meters, no range advantage. Qin Fan muttered and suddenly remembered the cannons of modern society, which seemed to have threaded rifling to increase the muzzle velocity and stability of the cannonballs, so as to increase the range, but I don't know if it has any effect on this kind of briquette-shaped cannonballs.

"Well, you might try to construct this kind of spiral raised trunking on the inner wall of the barrel." Qin Fan found a pen and paper and used the brush to outline two lines of alternating parallel spirals.

The processing technology of rifling is extremely complicated, and Qin Fan does not hope that these two scientific research leaders can make it, but it may be able to expand their thinking.

"What is this? What's the use? Lu Tie and Lu Diaoying both looked puzzled.

Qin Fan smiled: "Do you know the spinning top?" When the gyroscope rotates at high speed on the ground, it will move in a very small range and maintain a stable high-speed rotation for a long time if there is no strong external force to disturb it. These two rifling wires are designed to rotate the shell, giving it a higher firing rate and stability to increase the range. ”

"Ahh I understand! Lu Diaoying immediately understood, and Lu Tie nodded: "I didn't expect that Gongzi had such a profound understanding of this aspect, which really made the old man ashamed." It's just that this structure called rifling is probably not easy to process, and the old decay should do its best. ”

A few days later, the bombing points in Mobei ended the bombing mission, and Qin Fan gathered all the cavalry together, and the number reached 500,000. Among them, 50,000 shield war horses were exploded in the royal court, and Qin Fan spent a lot of money to build a school field there. After he used up the shield warrior drill code that exploded from Batu's body, he refreshed the population and began to appear in large numbers of shield warrior trainers.

Qin Fan asked Yue Ziyun and the others to take the army south immediately, and he was already planning to take advantage of the lack of food in the Longlin Alliance of Datong Mansion and attack it by force.

Qin Fan brushed 10,000 people in Tianya Town for the training of the Golden Fire Cavalry and the Tenglong Legion, and in the past few days, the Golden Fire Cavalry has re-replenished 10,000, and the Tenglong Legion has two thousand people each, all of which are seventh-order. Wearing the exclusive dragon armor and infantry battle dovetail shield created by the Divine Weapon Pavilion, the cavalry battle round shield.

The two shields are made of light and hard poplar wood, covered with iron and decorated with copper water. Such a shield is extremely light to use and has a very strong defense.

Qin Fan came to the station of the Tenglong Legion outside the town, Long He was training foot combat to make a siege formation, the soldiers were holding chest-high swallowtail shields, with a team of 100 people, lined up in a square column and approached with neat and powerful steps.

When they heard the command to gather the array, the outermost layer of soldiers in the front and back and left and right embedded the two sharp corners of the dovetail shield into the ground, and the soldiers in the middle raised the dovetail shield above their heads and squatted down at the same time, forming a tight defensive formation in a few seconds, as if a square box was formed in an instant.

Qin Fan walked over, and Long He walked over with his sword.

"Childe! The last general is rehearsing the military formation, and I don't know what instructions there are! ”

Qin Fan waved his hand and said with a smile: "Long Ji, you don't have to restrain yourself so much, I have always regarded the generals who were born and died together as brothers and sisters. ”

"The son is benevolent, and the last general will be moved."

Qin Fan pointed to the formation in front of him and said, "What kind of formation is this?" ”

"This is the shield array accumulated by the Longlong Legion for a long time, which can be used both for attack and defense, which can be used in the field and in siege battles. Defending against cavalry charges and arrow coverage, spearmen and shieldmen can attack the enemy with their spears from the gaps in their shields when they approach. ”

"Not bad!"

Long and three or two sentences explained the role of the shield battle, which shows that he is already familiar with this set of shield arrays.

Qin Fan turned to Long He and said, "Very good, Long Ji, you immediately go to Fengzhou with the whole army to gather with the army, and you will set off to cross the Great Wall to attack Datong Mansion in a few days." ”

"The last general commands!"

The twenty-year-old dragon is showing a fearless spirit at this moment, perhaps this is the spiritual inheritance of the Dragon Legion.