No change

There were no main generals in the shogunate, only the Sima of each division. The Qin army was defeated and retreated, and most of Sima did not want to retreat, but he was worried that the armor would be lost for no reason as Zhuang Wu said. E Cao's last powerful slash broke the worries of the Simas, but Zhuang Wudi, who was speechless, still did not agree to beat the drum, saying that he would wait for Xiong Jing to return from the summons, and the matter froze here.

Xiong Jing was unaware of the dispute between the Chu Shogunate about retreat and advance, and after galloping around the Qin Shogunate, he saw Concubine Jing who had been rescued by the light horse. He fell off his horse with an arrow, and the inconvenience of his calf caused him to break his leg bone.

"Qin people, Qin people, Jing crossbow......" Fu Jing wanted to cry without tears, he fell on the snow and watched more than three hundred heavy horsemen rush towards the short-range array, and then watched them perish like Jingsheng's more than six hundred horsemen. Giant armor, giant armor ......"

The crossbow was one reason for the heavy destruction of the Qin army, and the other reason was the armor. Xiong Jing asked puzzledly: "How is the big armor?" ”

"The spear of the Qin army chieftain went straight into the huge armor, and the knights of our army were all stabbed to death, and the huge armor was not solid!" Fei Jing choked, recalling in his mind the scene when the heavy cavalry rushed into the short-range array just now, and he saw several knights pierced and strung up by the Qin people's chief spears.

"Ju Jia?!" Xiong Jing couldn't believe it, he never knew that the giant armor would be pierced by the chief's spear, it was a brand new armor.

"Yu Da Ao, the armor is inferior...... "When Shangguan Leopard's head was about to be cut off by the Qin people, Xiong Jing led the horse to rush. He was a knight who rushed into the short-range array and rushed out. "Minister, sword, sword, sword......" Looking at Xiong Jing, he didn't finish his words and was silent.

"Sword?" Xiong Jing dismounted. He seemed to have heard the most terrible thing, and the dismount was very clumsy. A large part of the combat power of the Chu army is based on the great armor and blade. Because of the cavalry advantage of the Qin army, the artillery could only be fixed in the fort in more cases and could not be easily moved. If there is a problem with the giant armor and blade, then what should the Chu army do?!

Xiong Jing dismounted, and the light horse handed over the sword held by Shangguan Leopard to Xiong Jing, which was a prepared sword, and the tip of the prepared sword was cut off for some reason. Seeing Xiong Jing looking at this fracture, Concubine Jing said: "As far as the minister sees, the long sword is broken." There is only the front stab, and then the front stab is also broken. ”

"Broken?" Xiong Jing took the sword and slashed at his arm. When the others were taken aback, 'pop', this Jutie Iron Sword made by the Jutie Mansion instantly broke into several knots. He was shocked in an instant, and he grabbed a knight in huge armor like crazy, and slashed at his shoulder with his sword, and with another 'snap', the sword was unharmed, and the thickest piece of armor at the shoulder was actually cut off.

"Da Ao, the armor is indeed fragile." A knight stepped forward, pointing to a hole in his waist. "Fortunately, the wife of the minister is weaving Mo Xiangjia, otherwise it will ......"

"Mo Xiangjia?" Mo Xiangjia is chain mail, and after the new type of riding armor came out, the knight changed his armor again. Mo Xiangjia can not be worn, which can save more than ten kilograms of weight, but not all knights do not wear Mo Xiangjia, some people wear it, and some people don't.

Xiong Jing was probably crazy, and before he could finish speaking, he aimed at this knight with a sword. The thin wooden planks of the huge armor were generally pierced, but Mo Xiangjia on the inside of the clothes stubbornly blocked the tip of the sword, and the knight with the middle sword on the top retreated again and again.

"Changjin Lake, Changjin Lake......" He read out a lake that no one knew about, and everyone was dumbfounded. But everyone didn't dare to disturb him, knowing that he must have thought of something extremely important, which might be the reason why the armor was broken and the sword was broken.

Xiong Jing did think of the reason why the giant armor was broken and the giant sword was broken. After all, he mixed in the military arena, and whether the lack of cotton clothes in the Ninth Corps of Changjin Lake was unfavorable logistics support or negligence on the part of the Corps itself, this is a menstrual topic. In the battle of Changjin Lake, the war zone was suddenly cold to more than 30 degrees below zero and 40 degrees, the soldiers' bolts were frozen and could not be opened, the grenades did not explode, and the mortar was cracked as soon as it was hit, or even before it was fired. The machine guns had to fire every few minutes, otherwise they would freeze, and the barrel guns would fire at a much lower rate than normal......

The cold is the only factor that causes weapons to fail, and it is also the only factor that causes the armor to break and the sword to break. Xiong Jing could only think of this, and couldn't think of a more professional reason. In fact, most metals have a brittle transition temperature, that is, above a certain temperature, the metal is tough, such as modern steel plate, which can absorb 325 joules of impact energy in the longitudinal temperature shock test, but when the steel plate is at a low temperature of minus 30 degrees, the toughness will suddenly become brittle after a short period of temperature, and the steel plate that can absorb 325 joules of kinetic energy can only absorb 25 joules of kinetic energy in the temperature shock test.

The content of phosphorus affects the brittle transition temperature of steel (that is, after a certain period of temperature, the ductile fracture abruptly becomes brittle fracture), the less phosphorus, the lower the brittle transition temperature, but even if the phosphorus content is as low as 0.001%, the brittle fracture of ordinary carbon steel without special heat treatment will still occur at a low temperature of minus 20 or 30 degrees.

There are other factors, such as carbon (for every 0.01% increase in carbon in ordinary carbon steel, the brittle transition temperature increases by 2-4 degrees Fahrenheit), oxygen (0.01% oxygen can increase the brittle transition temperature of pure iron by 200 degrees), and the nickel added to the Xiong Jingju Armor Sword. Nickel refines the crystal, and the brittle transition temperature of gunsteel with nickel and chromium is as low as minus 50 or 60 degrees or even lower.

Iron smelting is different from copper smelting, iron smelting has many more variables than copper smelting, and ten years is not enough time for Jutiefu to accumulate enough data and experience. The state of Chu, located in the south, also rarely experiences low temperatures of minus 20 or 30 degrees. As long as you have experienced such a low temperature, do not adjust any elements, as long as you adjust the heat treatment process, and refine the grains inside the ferroiron through normalizing, you can get a low-temperature ferronickel with a much lower brittle transition temperature, but unfortunately these are too late.

"Da Ao! Da Ao! Lu Yangyan finally shouted, waking up Xiong Jing in contemplation. Seeing Xiong Jing looking at him, he stretched out his hand and pointed to the Jujia army formation that he had just broken. The Qin army at the front retreated, and the first half of the army was full of armor to advance, and the two army formations finally merged together, and the coalition army chasing from the rear rushed to the defeated Qin soldiers, and the tragic battle began again.

'Knock knock......' The Qin army shogunate had been singing cymbals before, but now it suddenly turned to drumming, Xiong Jing was surprised. Under the severe cold, the armor was broken and the sword was broken, but why did the Qin army attack? Do they ......

Xiong Jing was stunned as he looked at the two converging Qin army formations, and he suddenly thought of the heavy cavalry of the whole army. If all the iron armor was frozen and cracked due to the severe cold, then why did the Qin army kill the enemy? He glanced sharply at the array of skirmishes outside the shogunate. The setting sun finally shone on the cold and quiet shogunate, and the bronze spears in the hands of the shogunate's short soldiers reflected a golden light.

It's copper! Xiong Jing let out a sigh in his heart.

"Give me a bronze spear, give me a bronze spear, give me a bronze spear......" The two military formations finally converged, and the huge armor Qin soldiers abandoned the huge spears and iron spears in their hands one after another, and snatched the bronze spears that returned to the hands of the Qin soldiers.

470,000 foot soldiers, 160,000 huge spears, 80,000 iron spears, and the rest are all bronze spears. Originally, these soldiers with copper spears were lined up behind the battle, and now they retreated just to send copper spears to the 140,000 old soldiers of the Qin army. The Qin soldiers who had captured the bronze spear either crossed the rout and advanced towards the coalition army, or used the copper spear to stab the soldiers of Zhao and Qi who were killed behind the rout.

Both copper and tin bronze are excellent low-temperature metals, and when the strong iron changes from toughness to brittleness, bronze still retains its toughness at room temperature. Zhao Pawn chased Qin Pawn and stabbed hard, they were indeed a little strange why they didn't stab Qin Pawn to death every time they stabbed it, but who would care if their weapon was broken under the pursuit?

When the last few rows of soldiers fell to the ground, the bronze spear in the hands of the old Qin pawn stabbed without warning. They have long been accustomed to the protection of huge armor, and they do not dodge, but use the spears in their hands to stab back. The result of the backstab was much more than they expected, the Yi spear stabbed on the Qin Pawn's huge armor, and the huge armor cracked, but the spear blade had broken at some point and could not pierce the body; The bronze spear of the old soldier of the Qin army also stabbed them, and the huge armor was also broken, but the difference was that the cold copper spear smoothly pierced into their abdominal cavity, and the cold penetrated deep into the bone marrow.

"Hey!" Qin pawn drew the spear in a low drink, took a step forward and stabbed the copper spear again, and Zhao pawn, who didn't know what happened in the rear, was hit the spear again. The armor of the giant armor was broken, and the copper spear pierced directly into Zhao Shu's head. Advancing again, stabbing again, Zhao Pawn who was chasing after him didn't know what was happening, and was stabbed to death by Qin Pawn every time he rushed forward.

Seeing that the pursuing Zhao pawn was easily defeated by the bronze spear in the hand of the Jujia Qin pawn, Bai Lin felt as if he was dreaming at this time, but the shouts on the battlefield were indeed real. Standing on the wagon, he pointed to the army formation of the coalition army to the west and shouted: "Attack——! ”

"Attacking ——!" Tens of thousands of Qin soldiers of the Chinese army shouted after him, holding high their bronze spears and running towards the Chinese army of the coalition army who had just chased and killed their comrades. The three armies of Zhao Wei and Qi, who did not know why, also shouted to meet the enemy, and the hesitant shogunate of the Chu army finally stopped the sound of cymbals, and the drums began again.

"Da Ao ......" saw the Qin army that had just retreated and rushed towards the coalition army, and Lu Yangyan instinctively felt bad. Thinking of what Fei Jing and Shangguan Leopard said just now, and thinking of Xiong Jing's explanation just now, he said helplessly: "Our army is defeated." ”

"No!" Xiong Jing shook his head. "Our army is undefeated!"

"The Qin people have bronze spears, but our soldiers have no armor, and our army is defeated!" Kwon also said loudly. "Please return to Kaifeng quickly!"

"Our army is undefeated!!" Xiong Jing shouted at him. Then he said to a few light horsemen: "Quickly tell all divisions and brigades that there are copper spears between the corpses of the Qin people after the war, and the copper spears can withstand severe cold." The artillery must be hot and then fired. ”

"Yui!" The knight left in a daze. Now it is the Chinese army that is fighting with the Qin army, and the Chu army is on the left and right, and victory or defeat cannot be said to be too early.

"Get on the horse!" Riding lightly, Xiong Jing ordered the knight to mount. "The nickel giant is in front, Mo Xiangjia is in front, and the giant armor is in the back......"

"King Jing!" The smile on Wang Qian's face could not be concealed, and he smiled the moment he saw the Qin army rushing towards the Chu army. The Qin army was victorious, and the Chu army, whose armor and spears were all frozen, was by no means the opponent of the Qin army. He believed that Xiong Jing also understood this, and he got on his horse to escape. However, Xiong Jing did not leave, and he ran towards him again.

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