Ground excavation tunnel, than underground drilling tunnel is much faster, more than one person high tunnel engineering amount is a lot, but the progress is extremely fast, the excavated soil does not need to be transported away, directly on the edge of the tunnel, the tunnel is deeper, but also to prevent the enemy arrow from hurting the people working in the tunnel.

The tunnels where the attack was made were covered with rows of logs, so that these tunnels could not hinder the army from attacking the city.

These are naturally all things that Zheng Zhi arranged one by one.

Several groups of manpower, 24-hour rotation and continuous digging, day and night are the muffled sound of hoes digging the ground.

Naturally, the party members in the city also discovered the activities of the Song army outside the city. Renming looked at the castle in bewilderment.

"Dashuai, didn't Song Gou Mo want to dig a tunnel to enter the city? It's a fool's dream. The general who spoke was full of mockery, naturally laughing at the enemy's poor skills outside the city.

How can you succeed in the siege battle and digging tunnels? The tunnel is narrow, even if it is dug into the city, a few soldiers can come out, as long as the exit of the tunnel is guarded, how many people will be sent to death, it is more difficult than using a long ladder to attack the city wall.

"Zheng Zhi is not so stupid, he will not do useless stupid things!" Wei Ming Renming said a word, and he kept thinking about what Zheng Zhi's plan was. If it was seven or eight hundred years later, a soldier would have guessed the purpose of Zheng Zhi's actions.

But in this era, gunpowder was mainly used for firecrackers. The more powerful gunpowder is nothing more than that, although the momentum is huge, and Renming also knows how many people can't be killed by gunpowder. The wooden city gate is not bad, but if the city gate is blocked, Zheng Zhi's gunpowder will be useless.

Therefore, Wei Ming Renming did not expect that Zheng Zhi would blow up the city wall, how could gunpowder explode if it was a thick wall.

In fact, what Wei Ming Renming thinks is not wrong, and the city wall naturally cannot be blown up. Even if you put gunpowder under the city wall, you can't explode it. However, when the rammed earth wall is violently shaken, it will inevitably collapse.

As long as it collapses, it is enough. If it collapses, there will be a slope, and the meaning of the city wall will be lost.

No matter how scientific the ratio of black powder is, it is still black powder. The development of gunpowder has only just begun, and black powder is only the foundation. Even for artillery, black powder is only the most basic, and then there is smokeless powder, that is, "fire cotton", nitrocellulose.

Smokeless and unrelenting gunpowder would also lead to great military advances, and muskets and artillery would no longer have to be fired once and the barrels of the guns would have to be cleaned immediately. Ammunition is also easier and simpler to standardize.

As for later, after the development of chemistry, there are many classifications, and the common one is TNT explosives, which are chemically called trinitrotoluene, and TNT is the abbreviation of this name. There are also C4 explosives, polyisobutylene, and Shuo gum explosives, which can be kneaded and changed at will like flour.

The black powder in Zheng Zhi's hand, in fact, still has a lot of room for improvement in power, which is the purity of several raw materials. The production process in this era has great limitations. If the impurities of fire and sulfur can be reduced, the power will naturally increase exponentially. That is, the quality of charcoal can be improved, and it can also increase a lot of power.

All these restrictions are not something that Zheng Zhi can solve right now. But Zheng Zhi is also beginning to think about these problems, the simplest thing is to ensure the quality of charcoal, charcoal is fired with wood, using the method of kiln firing, and the quality of the charcoal from each furnace is naturally uneven.

It is the charcoal made by the local method in later generations, and the smoke often billows in the brazier, let alone in the Song Dynasty.

"Dashuai, isn't Song Gou Mo trying to dig up the city wall?"

This sentence has some truth, relatively speaking, it is also more realistic, Wei Ming Renming listened to the words and thought for a moment and then said: "Although the city wall is mostly rammed earth, but there is also the foundation of the old city, how can it be easily dug up, as long as the Song people show up under the city, they will come to die, how can they dig calmly." ”

Wei Mingrenming's words are also reasonable, but Zheng Zhi can't let the soldiers dig the city wall with hoes, it's too unrealistic. As long as the gunpowder can cause a huge shock. Everyone in the city thought about it, but they couldn't figure out why the Song people outside the city dug the tunnel.

When Wei Ming Renming was thinking about it repeatedly, there was good news in front of him.

"Dashuai, there is a team of people from outside Dongcheng, and they are Liao."

Wei Mingrenming was overjoyed when he heard this, and he no longer thought about the enemy's pit outside the city, and only said: "The Liao envoy is finally here, the Liao people will not let the Song people gain power, this time they will definitely put pressure on Zheng Zhi, the Song people listen to the Liao people more, and this time they may be able to let Zheng Zhi withdraw from the army." ”

Wei Ming Renming is really happy in his heart, he has a public heart, and naturally he is also a little selfish. The public heart is that this war may be heard, and the Liao State will inevitably go all out to mediate, even at the expense of threatening Zheng Zhi with war. There is no doubt about this, how could the Liao State let the Great Song Dynasty become dominant.

Selfishness naturally has the matter of ascending the throne and becoming the emperor, but anyone who is rolling in the red dust will not be able to be truly selfless. The Ninety-Five Honor, for the famous Renming who was born in the royal family, is a little more tempting.

The generals on the left and right were overjoyed when they heard this, and they all got up and went to the east gate. From a distance, I saw a group of people coming from the east, there were not many people, although there were only twenty or thirty people, and the big words on the banner were really like life-saving straws.

Decades of Song Liaoxia, the pattern of the Three Kingdoms, how could the Liao people let the Song sit big.

Zheng Zhi outside the city received the news much earlier than Wei Ming Renming, and the scouts found the Liao envoy dozens of miles away.

After hearing the news, Zheng Zhi didn't pay much attention to it, just sat in the big tent and waited, not going out of the door, let alone talking about greeting.

The Liao envoy is still Xiao Temo, the master of the Great Liao, and the general of the Great Liao.

Xiao Temo seems to have aged a lot in recent years, when Zheng Zhi saw him a few years ago, although Xiao Temo was not young, he was full of spirit, full of red light, and had a different kind of spirit.

Goodbye today, has become a dying old look, the Liao State has been in war for the past two years, repeatedly defeated, and the family and country have been lost, even this horse master Xiao Temo is also under pressure, and he can't sleep day and night.

Xiao Temo entered from the big tent, saw Zheng Zhi sitting still, his face sank, and said: "The envoys of Da Liao are here, why don't you see each other?" ”

Although Xiao Temo was neglected once last time, at least Tong Guan's surface work was still very good, but this time Zheng Zhi didn't have any surface work. If an envoy from another country is not received prudently, it is a matter of diplomacy and a sign of contempt for a country.

Zheng Zhi naturally understood this, but he didn't care, and only replied: "At the moment of the war, the military affairs are heavy. I wonder what is the important matter of your envoy coming from afar? ”

Xiao Te, as an envoy of a country, Zheng Zhi's attitude was already humiliated, and he knew that Zheng Zhi was asking knowingly in front of him, and he reprimanded angrily: "Where is the Dao of the Seed Master?" Why didn't you come to meet this envoy? You are a military general and a villain, how can you be qualified to talk about the major affairs of the Three Kingdoms with this envoy. ”

Xiao Temo knew Zheng Zhi, and the "military general villain" was naturally an inherent impression. The "villain" here does not mean that Zheng Zhi is despicable, or that the literal meaning of "villain" is also true, only that Zheng Zhi has a low status. Just like some small people call themselves "villains", it is a truth. In fact, it was Xiao Temo who was humiliated, and he had to find a sentence back in words.

As soon as Xiao Temo's words came out, the generals in the tent glared angrily. Obviously, Xiao Temo really didn't know what happened to Master Dao and Liu Fa.

Zheng Zhi smiled when he heard this: "Haha... Your envoy is right, the prime minister is not in the army at this time, so he asked the envoy to wait in the camp for a while, and then talk to the envoy about the major affairs of the Three Kingdoms when the prime minister comes. The little general has heavy duties, the big war is imminent, and the siege of the city is imminent, so he will not accompany him much. ”

Xiao Temo heard Zheng Zhi's words, and couldn't help but be a little anxious, this is to stop the Song army from attacking the city, how can Zheng Zhi continue to prepare for the war, and hurriedly asked: "Where is the Dao of the Planters?" The envoy went to find him. ”

"The prince is now in Bianliang City, and the noble envoy will go slowly and not send it." Zheng Zhi didn't bother to talk to him, if Xiao Temo went to Tokyo, Zheng Zhi would be happy to see it.

Xiao Temo was stunned when he heard this, where did he think of such a big battle, but the commander was not in the army, if he really went to Tokyo to find the way of the planter, everything would be over, and he hurriedly asked: "The master is not there, who is in charge of the army?" But Liu Fa? ”

"Liu Xianggong sticks to the lonely city, and dies when he turns the tide, the coffin is still in the army, if the noble envoy wants to mourn, the young general will send someone to lead the way. All affairs in the army are temporarily under the control of the junior generals. I wonder what else is going on with your envoy? Zheng Zhi's words were also teasing, just now this Xiao Temo said that he was a "military general villain" and had no qualifications, but now I want to see if this Xiao Temo wants to talk about it.

When Xiao Temo heard this, his face was naturally embarrassed, and the words he had just said were immediately about to be withdrawn, which was really a bit embarrassing, but now he could only talk to the young man in front of him, Zheng Zhi.

In order to alleviate the embarrassment, Xiao Temo glanced left and right, found a seat and sat down, and then said: "Since this matter has fallen to you, the envoy can only talk to you." ”

Xiao Temo found himself to go down the stairs, and after the words paused, he went to see Zheng Zhi, thinking that Zheng Zhi would reply to the last sentence. But Zheng Zhi in front of him was actually looking through the official documents on the desktop by himself. couldn't help but be even more embarrassed, and said in his mouth: "Song is a big country, with a population of 10,000, Xia is a small state, and there is little land and widows." The Song fought by bullying the small, and slaughtered his people and destroyed his country. Wouldn't doing such an unkind and unrighteous thing make the people of the world laugh at it? ”

"Hmm." Zheng Zhi hummed softly and didn't look up. Zheng Zhi really didn't want to participate in this kind of debate, and those who talked like this were all played by those who claimed to be benevolent and righteous, so Zheng Zhi was naturally lazy to speak. What benevolence, benevolence, righteousness, and righteousness, the two countries are at war, and they don't care about this.

Zheng Zhi replied with a "hmm", then stopped speaking, and didn't raise his head. Xiao Temo's face was as pale as water, and he opened his mouth and said again: "At the moment of injustice and injustice, the ink of the peace talks has not dried up, and the Song Dynasty has raised troops to commit Xia, and he has done such unbelievable things, who will dare to believe in Song Zhi's promise in the future." ”

Xiao Temo really opened his eyes and said nonsense, if he wanted to tear up the peace treaty, it must be something that Xixia did. If it weren't for the temporary rebellion of Western Xia, how could the cultivation master be forced to be helpless to clear the wilderness.

"Hmm!" Zheng Zhi not only let out a "hmm" this time, but also nodded his head a few times. Don't even bother to argue. In the big tent, whether it is the Song or Liao, they are all clear-eyed people and they all know in their hearts. Zheng Zhi didn't bother to say anything.

Zheng Zhi had such an attitude, Xiao Temo couldn't bear it anymore, stood up and said angrily: "Song Zhi is unkind, unrighteous and unbelieving, and I Da Liao also sees it in my eyes." Song breached the contract first, so I can't blame Da Liao for not keeping the peace treaty. The alliance of Tanyuan, from now on, did not count, after the envoy returned to China, raised an army of 100,000 in Yan and went south to attack the Song Dynasty. I, Daliao, raised troops for the righteousness, and you all take care. ”

This time, Zheng Zhi spoke: "Is your envoy's words wrong, the 100,000 army is going north to cut gold?" ”

"This envoy is correct, the Jin people are just suffering from ringworm scabies, that is, 100,000 troops went south to attack the Song Dynasty, this sentence is also the meaning of my Emperor Daliao, the unjust and helpless, the country that violates morality, must pay the price." Shaw swore that there was no other way, and the last resort for negotiation was naturally war.

It was also under this Lingzhou city that Tong Guan neglected the Liao envoy Xiao Temo, and afterwards personally sent the Liao State to mediate the matter. Xiao Temo even ridiculed Tong Guan above the Liao State Palace, and the court laughed at Tong Guan at that time, saying that the Southern Dynasty was eunuch as an envoy, and that the Southern Dynasty was a country with no one.

At that time, Tong Guan was humiliated, and Xiao Temo was naturally very happy, and he also knew that the Song people were still afraid of the Liao State after all. This time, the threat of war is naturally the same meaning.

Zheng Zhiqian laughed out loud: "That's it, your envoy and go back, you and I are preparing for war, and at the beginning of spring, the young general will also prepare 100,000 troops in Hebei, and we will not see you or disperse." ”

Originally, the attack on Liao was the injustice of the Song Dynasty. At this point, it turned into a covenant war. Zheng Zhi also shook his head again and again and smiled.

Xiao Temo's own family knows his own affairs, and there are still a lot of domestic troops, but where is there leisure to go south to attack the Song Dynasty, even if he has this leisure, he can't do this thing, and it is too unwise to fight on two fronts. Whether Jin Ren is suffering from ringworm or scabies, Xiao Temo is clear, but Xiao Temo thinks that Zheng Zhi is not clear. Family ugliness should not be publicized, but family ugliness has already been known.

Xiao Temo's momentum suddenly rose, pointed at Zheng Zhi and said, "Zheng Zhi, are you really not afraid of causing a war between the two countries?" Can you afford to take this responsibility? ”

"Your envoy's words are the meaning of the Emperor of Liao. The words of the young general are also the meaning of my Emperor of the Great Song Dynasty. The young general is not as bold as the noble envoy, and he vainly talks about starting a war between the two countries. If the war starts, the young general does not need to be responsible for this matter. I just don't know if you can afford this responsibility. Zheng Zhi rebelled against the army, and in his words, he also broke Xiao Temo's bluff.

When Xiao Temo heard this, there was no other way, and he had to hold up this momentum with a bluff, but he was thinking in his heart that Zheng Zhi was just bluffing, how could Song dare to start a war with Liao!

"Zheng Zhi, since this is the case, it is useless to talk more. If you don't withdraw your troops, a great war will break out at the beginning of spring. After the envoy returns to the dynasty, he will also send today's things to Bianliang, and see how the Emperor of the Great Song Dynasty decides with you. It is impossible for Xiao Temo to turn back and speak softly, and he knows that the two countries are at war, and peace cannot be sought with soft words. The words are here, it depends on how Zheng Zhi thinks about himself.

"The young general will also send a letter of resignation for today's affairs to Shangjing, and it will be up to the Emperor of Daliao to decide on the envoy. Oh... His Majesty the Great Liao Emperor seems to be in Xijing Datong, right? So he was sent to Xijing. Zheng Zhi naturally looked down on Xiao Temo, the old man, this letter arrived in the hands of Yelu Yanxi, and when Zheng Zhi led the army north next year, it would be impossible for Yelu Yanxi not to kill Xiao Temo.

Xiao Temo was shocked when he heard that Zheng Zhi actually knew that Yelu Yanxi had arrived in Xijing. But I also know that it is useless to say more, and if you say more, you will lose, and the more words you have, the more empty your heart is.

"Farewell!" Xiao Temo turned around and left, and a group of Liao people came out.