Although the Turkic cavalry's sneak attack failed, if the Sui army was just happy and then put it behind the scenes, it was actually a failure. Summarizing the experience and lessons of each battle is the basis for the next success.

Just as dawn, all the generals above Ying Yanglang General followed the head coach Zhang Xuan to the battlefield outside the camp. Although Wang Junkuo and Xie Yingdeng had many urgent matters to deal with, the two of them took the initiative to follow. This kind of opportunity could not be easily encountered.

The battlefield was full of Sui soldiers who were cleaning up the aftermath, transporting bodies, escorting prisoners of war, counting war horses, and some injured war horses were also taken care of.

There are also many soldiers driving ox carts to collect iron crossbow arrows. It takes a lot of money to build one of the iron crossbow arrows, and it costs 30,000 yuan to shoot at one time. No matter how powerful the national strength is, it cannot withstand such expenses, so retrieving the iron crossbow arrows is the top priority after the war.

Zhang Xuan rode on a majestic green horse, which was one of his nine beloved horses. He was seized from Yu Wenhua and his hands. It was also the treasured BMW of Emperor Yang Guang of Sui, named Qingyan.

"The biggest problem with our sneak attack this time is that the scout tactics are wrong. Of course, I am not accusing our scout soldiers. They work very hard and are very excellent, and there is no blame. I mean our scout tactics are wrong."

At this time, Pei Xingyan whispered to Zhang Xuan: "Master, there is an outsider here."

Of course, Zhang Xuan knew that two Tang generals were behind him, but he didn't care. He nodded to Pei Xingyan and continued to say to everyone: "We knew from the captured prisoners of war that they left the main business five days ago. At that time, we happened to set out from Shiai County to move westward, and our scouts were only deployed three days ago, that is, when we arrived in Jiaocheng County.

If our scouts can always closely monitor the Turkic camp, then we can use the tricks and make comprehensive arrangements, and annihilate all 40,000 Turks that will be attacked in one fell swoop. This is our lack of prospects for scout deployment. We must learn this lesson, including everyone."

Everyone nodded silently. The reason why Zhang Xuan didn't care about the two Tang generals was because he only talked about appearances, not the root cause.

The root cause is that although their strategy has been determined, it is to wipe out the Turkic army in Bingzhou, it is a bit undecided in specific tactics. It is whether to directly confront the Turkic army, or wait for the Turkic army to run out of food, or wait for the Turkic army to fail to move south. It is precisely this tactic that has led to their slow deployment in the army.

The deeper reason is the mutual distrust between the Sui and Tang dynasties. Li Yuan wanted the Sui army to fight with the Turkic crane clams, and the fisherman benefited. Zhang Xuan also wanted to use the Turkic hands to conquer Taiyuan, and he would be the savior again.

It was just that the Turkic army had no intention of attacking Taiyuan, and it stopped moving forward in Loufan County, which finally led Zhang Xuan to decide to send troops north.

However, he didn't want to talk about these deeper reasons to the generals in detail.

At this time, Xie Yingdeng couldn't help asking: "I heard that the Turkic Army was defeated this time because of a new type of defensive heavy crossbow. Can Your Highness introduce it?"

Xie Yingdeng's question made a group of Sui army generals look at him. It was obvious that Xie Yingdeng asked a very sensitive question, and Wang Junkuo also felt something was wrong. He coughed gently and reminded Xie Yingdeng that there were things he could not ask.

Zhang Xuan smiled slightly and said, "It was because our military advisor Fang who defeated the Turkic army's sneak attacks, so that we could deploy first. Therefore, if we talk about merit, military advisor Fang should rank first."

The generals applauded Fang Xuanling together, and Fang Xuanling bowed and smiled: "The Grand Marshal is really too much. The military advisor should give advice. If one day the Grand Marshal says that Fang Xuanling goes to the battlefield and kills the enemy general, then everyone will praise me again!"

The generals burst into laughter, and the atmosphere suddenly became lively. At this time, several soldiers carried a honeycomb heavy crossbow. Zhang Xuan patted the heavy crossbow and said with a smile: "If Military Secretary Fang is the first merit, then this heavy crossbow is the second merit. Without its outstanding performance, the 10,000 cavalrymen who attacked the camp would not retreat so quickly, and the Turkic rear army would not immediately decide to withdraw, so I would give a heavy reward to the craftsmen who developed this heavy crossbow."

Wang Junkuo and Xie Yingdeng didn't expect that Zhang Xuan had taken out the heavy crossbow, and it was ready in advance without any hindrance. Both of them were a little moved and surrounded everyone together.

At this time, five soldiers who operated the honeycomb heavy crossbow were also brought up. Zhang Xuan smiled and said, "Learning to summarize experience and learn from the lessons is not only the general's business, but also the matter of every soldier. Let's listen to the opinions of these soldiers and see where this heavy crossbow is slightly insufficient?"

A fire chief bowed and said, "This heavy crossbow is easy to operate, and it is also very labor-saving to wind the strings with a long copper rod. It goes without saying that it has shortcomings, I personally think that some details need to be improved, such as changing the quiver is to use a wooden wedge to clamp it in. Under gravity, this wooden wedge is easy to break, causing it to be shot out together with the quiver. If it is changed to a copper fastener, it is like a crossbow machine, then it will be more durable."

Another soldier also said: "The rear winch is placed flat, which will cause the winding soldiers and the arrow-mounted soldiers to influence each other. Only after the strings can they start loading arrows, which will waste precious time. If the winch is placed vertically, the winding and arrow-mounting will not affect each other. It can be carried out at the same time, saving half of the time. And as long as two people are winding, it is enough. Three people can control the heavy crossbow, which is less than the current five people."

Another brigade coach said: "The whole wooden structure is indeed easy to fall apart. The force of each shooting is very fierce. Although it was only launched twice, it felt like the rack was about to fall apart. It turned out that Beizhi was manipulating the stone cannon, and there was no such problem with the stone cannon."

"Why doesn't the stone cannon have this problem?" Zhang Xuan asked afterwards.

"You are the general manager, the main connection of the stone cannon is pig iron, so it is very strong. Although the honeycomb heavy crossbow is a full-wood structure and is relatively light, if you use a large cart to transport it, it is actually not a big problem to use pig iron to weigh more than 100 kilograms, but at least it becomes very strong."

Everyone, you and I, were summarizing the experience and lessons of the battle. Wang Junkuo was filled with emotion. He finally understood in his heart why the Northern Sui army was able to win repeatedly and be invincible. There were many reasons, but as far as he saw today, being good at summarizing experience and lessons was also an extremely important reason. This time he suffered a loss due to the poor scouts. As long as he reflected in time and repaired the sheep, there would be no next time.

Wang Junkuo became in a heavy mood. Not only were the top military leaders doing the battle summary, but ordinary soldiers also participated in the discussion. His powerful weapons were criticized for being criticized in an unsatisfactory way. How could such an army not be scary? Wang Junkuo began to worry about the prospects of the Tang Dynasty.

Back at the Central Army's tent, Fang Xuanling took a sip of tea and asked with a smile: "How could Your Highness invite two Tang Army generals to come today?"

Zhang Xuan stood in front of the sand table and stared at the Turkic camp quietly. After a while, he said lightly: "Either don't do it, do it to the extreme. I believe that Li Yuan will know the words and deeds of the two of them in the Sui camp sooner or later."

Fang Xuanling sighed slightly: "Your Highness is far-sighted, but most people really can't imagine it! Many generals are still worried about letting General Tang participate in the discussion."

Zhang Xuan smiled and turned around and asked Pei Xingyan, "Are Yuan Qing worried?"

Pei Xingyan hesitated for a moment. The military advisor’s words just now made him dare not speak easily. What does the commander’s foresight mean?

But since the Grand Marshal asked, he had to answer. After hesitating for a moment, Pei Xingyan said: "Reporting to the Grand Marshal, I am indeed a little worried."

Zhang Xuan smiled slightly, "Actually, I understand in my heart that some things are indeed secrets, such as the lessons of scout deployment, such as the honeycomb heavy crossbow, etc., are all relatively important information. In the future, we will fight against the Tang army, and they may be able to use these information, but even if they know this information, can they defeat us?"

Pei Xingyan thought for a while and said, "They can discover the rules of our scouts after a few times. Even if they see them with their own eyes, they may not be able to create them. Although what the commander said is important, it is not confidential, so it is not a problem to let them listen to it."

Zhang Xuan shook his head, "You only talk about the surface, not the core. The battle between the two armies is morale, and the competition between the two countries is about national strength. We compete with the Tang Dynasty for the world is essentially a battle of national strength. For example, I gave the drawings of the honeycomb heavy crossbow to the Tang Dynasty. One thousand heavy crossbows will cost 60,000 kilograms of pig iron at a time, and it is extremely difficult to build a crossbow arrow. Only by making three iron crossbow arrows can one succeed. How much pig iron is needed to consume here? Do you think the Tang Dynasty has such great national strength to use it?"

Pei Xingyan nodded slowly, "I finally understand."
Chapter completed!