I saw that the cavalry on the left and right flanks of the Tang army camp was like an ironclad jungle without any flaws, even if Hitler led the elite soldiers of the tribe to take the lead and charge to kill, they could not make any progress, and the Turks had nothing to do. If it weren't for the Turkic horse team relying on the fortifications of the city, they would have been unable to stand in place after several charges. At this moment, the victory or defeat of the Turkic cavalry, who were good at galloping across the field, was entirely dependent on fortifications, which could not but feel like an absurd irony for them.

At first, the command group of the little khan Tosi pinned the hope of repelling the Tang army's siege on the flank to break the enemy and defend at the same time, but the plan was obviously about to fail. The faces of the ministers such as Tosi and Tunyugu were very bad at this time, and they were afraid that their hearts were cold, because the situation in front of them made them see no hope.

"What is the car escorted by the heavily armored infantry army of the Tang Army?" Someone couldn't help but ask, but no one could answer his question. Everyone's expressions were even more panicked.

People are always afraid of the unknown, and the more they don't know, the more they will be in awe.

Li Shizhi said: "If the minions of the Xue clan want to attack the city by digging up the wall, there is no need to worry, it is not a temporary work...... But it doesn't look like they're digging a wall, maybe they're trying to storm the gates. How is the gate defense of Black Sand City, and can there be a fireproof structure? ”

"The city gate was designed and repaired by Wang Mang, a Han mang, and has three fire prevention functions. The first one is two inches of mud to prevent the enemy's arrows from hanging oil gourds 'small scoops' from pouring oil on the door. ”

Li Shizhi nodded, and said in his heart that Wang Mang, who defected to the Turks, is also a person with some insight in the country, and the defense method is actually to follow the Han people to defend the city. The civil war in the Tang Dynasty was not like the cavalry on the grassland, and it was difficult to avoid the battle of attacking and defending the city, so the strategy of attacking and defending the city was much more advanced than that of the nomads.

In this era, it was impossible to cast a real iron gate, and the material of the city gate was actually very simple: iron and thick wooden planks. In addition to using large siege equipment to storm the city gate with brute force, the easiest way to attack the city gate is to burn the city gate with fire. The defense will naturally consider fire prevention more, and the simpler way is to paint mud on the door before the war, but the thickness should not exceed two inches, otherwise it will be easy to fall off after drying. The benefits of mud smearing, as Fang Cai Tun Gu said, can absorb the fire oil when the enemy army uses long-range weapons to pour oil on the door, making it less prone to ignition.

However, mud is only a relatively simple method, and it is also easy to fail, such as being knocked off by an arrow. Tun Desire Valley said two other measures, one of which is to wrap iron sheets and make the surface of the city gate uneven, so that the angle of the arrow's force is not good, it is not easy to insert on it, and it is not easy to splash things like "oil gourd" directly on it. Tun Desire Valley said: "Dig holes in the city gate board, and the holes are embedded with sharp cones protruding, two inches long, one inch, seven inches apart, and thickly painted to prepare for fire." ”

Although the design was made by the Han Wang Mang, but the valley is very familiar to say, this old man is very open-minded, and he is obviously good at learning new military technology, "The last method is to build a dark room on the city gate, in which there are soldiers splashed with water, and the dark room leads to the city, which can carry water to fight fires." ”

Li Shizhi couldn't help but breathe a sigh of relief after hearing this: "I was worried that the Tang army would break through the city gate, but fortunately, King Zuo Xian had already prepared for the city defense. You can see the heavily armored sword and shield men advancing in, the arrows cannot break the formation, and the ballista catapults cannot prevent them from approaching the city, if they attack with fire, they can directly pour oil on the door. However, now it seems that Black Sand City is worry-free for the time being, and more people can be sent to the back of the city gate in advance to prepare to carry water, and once they set fire, they will splash water from the dark room to save it. ”

"Li Gongzi is really clever, and everything is as you expected." Tun Yugu couldn't help nodding and said, feeling that what Li Shizhi said was very reasonable.

Li Shizhi said lightly: "The cavalry of the Tang Army rushed here, and there were no large-scale siege equipment at all, except for attacking with fire, they had to dig the corners of the wall. Guessing their strategy is not a clever one. ”

Although many Turkic ministers were not accustomed to his conceited demeanor, he was helping the Turks and was resourceful, so no one said anything unpleasant.

Under the south gate, the Tang army's heavily armored infantry army advanced unstoppably like an ironclad chariot in a regimental queue, and after they entered the range of arrows, sure enough, the bow and arrow could not penetrate the iron shield and iron armor at all, and as expected, they advanced straight to the city gate. The horn of "woo woo ......" echoed, accompanied by the drums of each battalion and the shouts of the sergeants, the heavy iron shoes stepped on the drums, and the earth seemed to tremble, in fact, the number of people was really not much, but the momentum was terrifying, fortunately, Li Shizhi's clever calculation made the Turks feel somewhat at ease, at least they did not have to face the danger of breaking the city immediately.

The first regiment of the Tang army came to the city gate, and the soldiers approached the city gate with iron shields and risked their lives, and the Turkic archers saw that the arrows did not pose much threat to them, so they turned to attack the cowhide cart in the middle. The cowhide on the roof of the car was able to bounce off blunt objects, but the defense against bows and arrows was not great, and the rockets shot through the cowhide, and the sergeants were busy fighting the fire, and after a while, the cowhide cart was accidentally overturned, and a pile of wooden blocks was poured out of it...... When the Turks saw this, they wondered: what is the use of attacking the city gate without transporting oil and wood? Do you want to pile up a lot of firewood and burn it slowly underneath?

The infantry army under the city overturned the car, so they left it alone, and shot at the city with a bow and crossbow, and there was a bow and arrow shooting up and down, and the Tang army was at a disadvantage when attacking on the back, but fortunately it was wearing armor. They were originally cavalrymen, and most of the armor on their bodies was actually not very good at defending against melee weapons such as spears and blunt weapons, but it was miraculous against arrows, and it was generally difficult to shoot through the flesh and skin, and even if they were injured, it was difficult to be fatal.

The Turkic defenders could not stop the well-equipped Tang army from approaching the city, and one after another the soldiers of the regiments also arrived, and they all overturned the cowhide carts at the city gates, without exception some wood. The defense of Black Sand City was not good, and the Wujia River was hundreds of paces away, and there was no water diversion to build a moat, which created the current situation: once the cavalry outside the city did nothing more than prevent the enemy from approaching, it would be difficult to prevent them from coming under the city walls.

At this moment, the last cowhide cart was overturned into the wooden block, this time differently, and two large closed wooden barrels were poured out. Probably oil! The Turkic generals in the city immediately shouted: "Prepare to put out the fire!" As soon as it boils, keep pouring water down! ”

I saw that there was a water tank at the mouth of the dark room on the city gate, which was filled with a full tank of water, at least three stones, and two Turkic soldiers were holding on to the rope and were ready to call at any time. The narrow passage behind them was also full of people ready to pass the water up, and there was also a busy work behind the city gate, and people lined up until the entrance of the passage, and the scene was like a drought and a group of people were queuing up to fetch water.

The Tang army infantry under the city gate was still lined up to shoot arrows at the beginning, and at this time they ran away, and the scene of chaos was like a lost battle, and even the gongs and drums were left behind. After a while, the cavalry turned around and left.

A hundred steps away, there were three people with bows and arrows standing side by side, and a military general next to him said: "You have to shoot me accurately, otherwise you will miss the fighter plane to ensure that you can't finish eating and walking!" A gray-bearded veteran standing in the middle snorted from his nose and said indifferently: "When the generals of the Flying Tiger Regiment came down to select soldiers, they thought I was too old, and I didn't come in to eat the imperial food when I showed my hand?" If you want me to say that I don't need these two descendants next to me, it's enough to have me. ”

"Don't blow the bull first, make people laugh at it for a while, and you'll see it right away." The general deliberately provoked.

The old man didn't answer, he picked up his bow and arrows and lit a fire on the fire on the ground, and raised it very smoothly with a "bang", and a rocket was thrown into the air. At this time, the other two god armhands hurriedly lit a fire and took aim. Before they could release their arrows, there was a sudden earth-shattering loud "boom", which scared the bows and arrows in their hands away without paying attention.

The earth trembled violently, and black smoke and debris rose into the air in the distance, and in an instant, the entire Black Sand City was about to be shrouded in thick smoke. In the army, the horses neighed, some were frightened and ran, some raised their front hooves, and a military general was thrown off the horse by the frightened horse, and he scolded loudly, sat up and stared at the situation in front of him.

Exploded! The power of two barrels of gunpowder, of course. The officers and men of the Mingguang Army had never seen this thing with their own eyes, and at this time, the officers and men in the army were all surprised and surprised, and they were all stunned for a while.

Gunpowder was already born in this era, but it was used by alchemists to ambush fire. The first time it was used in military affairs may be Xue Chongxun's attack on Shibao City, of course, it may have been used before but it was not recorded in the books, so there is no way to know, so Xue Chongxun can be counted as the first person; The second time it was applied to the military, it was the eunuch Yang Siqiao who led the troops to fight the Nanzhao, and the battle was also a war supported by Xue Chongxun's hands. Although Yang Simiao was a eunuch, his military talent had long been valued by Du Xian, who had led the troops for a long time, and Du Xian was more concerned about Yang Simiao's various war strategies, and he also inquired about his methods of attacking the city, so this time the attack on Heisha City was repeated and gunpowder came in handy.

At the beginning, Du Xian patted his chest in front of Xue Chongxun and said that he would use 10,000 elite cavalry to capture Heisha City, of course, he was not a mouthful, he had already passed the age of a newborn calf who was not afraid of tigers, and made a detailed plan before the military order, thinking that the elite of the Mingguang Army could have an advantage in frontal field battles, and with siege weapons, why was it difficult to take Heisha City?

When the black smoke rose, Du Xian smiled and was confident.

At this time, the Black Sand City was filled with gunsmoke, and those who lined up to "extinguish the fire" had been wiped out with the city gate, and those who were a little farther away had become stumps and broken arms, and they were simply ordered to line up there to die.

Fortunately, Tosi and other ministers were saved by being a little far away from the front line in the south of the city, and everyone was so smoky that they couldn't look like they were blinking on their dark faces...... It's a pity that I can't see Li Shizhi's expression at this time, and the conceit of the original scheming may be gone. Most people don't even understand what's going on. G