The so-called base camp is dozens of large tents and several large stables stationed in the open space outside the city, in which there are Khitan soldiers who change shifts and rest, there are their commanders, there are grain and grass, and there are many war horses in the stables.

Lu You and his entourage first hid in a village outside the city, and after dark, they ordered a few guards to go out and get a few clothes from each other, and then inquired about some information, knowing that the Khitans had set up ambushes on the south and east roads of Jinzhou, because Zhending in the north and Bingzhou in the west had already been captured by them, and there was no foreign aid.

After learning this, after dark, Lu You personally led the guards to bury gunpowder on the main road leading to the base camp in the south and east, because the people were the most sleepy at the beginning of the ugly, the most sleepy and the least vigilant, so they chose the first time to ignite the tent of the base camp with rockets, and then threw gunpowder to blow up the opponent's stables, and those frightened horses quickly fled and ran around, not only helping to spread the fire, but also trampling on many soldiers.

The explosion of gunpowder and the burning fire of the tent alarmed the soldiers besieging the city, and also alarmed the Khitans who set up an ambush, they all knew that their grain and grass were in the base camp, and the grain and grass were related to the success or failure of their battle.

Seeing this situation, Lu Zhu thought that a large army was coming to reinforce him, so he hurriedly ordered his troops and rushed out with his team to open the city gate.

The war is a morale, and the Khitans have made a fuss on their own side, taking care of themselves, how can they still have the mind to face the war?

Especially when the Khitan generals ran out of the tent in a hurry, they were shot by an arrow ordered by Lu You, and his subordinates were busy leading him to escape.

In the end, the battle was won by the Great Zhou, and the Khitan side suffered tens of thousands of casualties, in addition to leaving more than 2,000 war horses and thousands of stones and grain and grass to the Great Zhou, and most importantly, this battle gave Lu You great confidence.

After Jinzhou was saved, Lu You began to think about recovering Zhending, but he was not carried away by this victory, but asked Lu Zhu to take it, first inspected the terrain around Zhending three times, and after coming back, he made a simple version of the sand table according to the map.

In the end, he decided to organize a large number of soldiers and some strong villagers to start digging a trench at night a mile outside the city of Zhending, as agreed with Yan Yan at home, and the reason why he chose this refusal was because ordinary bows and arrows could not reach the range; On the other side, a large number of artillery pieces for trebuchets and Kong Ming lanterns that could carry gunpowder were prepared.

The Khitan soldiers went out of the city after dawn the next day to find a newly dug ditch outside the city, and although they did not know the specific intentions of these Great Zhou people at that time, they guessed that it must be related to the siege of the city.

Because most of these Khitans who failed to attack Jinzhou a few days ago returned to Zhending to recuperate, they were planning to fight Jinzhou again after some time, but they didn't expect these Great Zhou people to dare to challenge them.

As a result, these Khitans are also gearing up, wanting to avenge the embarrassment of fleeing a few days ago.

However, they were not stupid, knowing that the Great Zhou people had gunpowder in their hands, and in their opinion, the best way to deal with gunpowder was to water and wet it, so they opened the city gate during the day and ordered a large number of soldiers to carry buckets into the trenches.

This scene was seen by the secret sentinels left in the mountains and forests and villages, and these secret sentinels were also inexplicable, and they couldn't understand why these Khitans would pour water into the trenches.

After Lu You knew about this situation, he thought for a while, and ordered the soldiers to continue digging trenches at night, because the watered land was better dug, so he divided ten soldiers and simply dug around in the open space outside the city.

Sure enough, the next day, these places that were dug up were also watered, which made it easier for the soldiers of Da Zhou to dig trenches.

Three days later, a Khitan general saw something and noticed that these trenches in the Great Zhou were not intended to bury gunpowder, but rather to block the march of their war horses, so they stopped watering and filled the trenches instead.

This time Lu You did not do it, this night, he ordered the archers and gunpowder men to ambush in the trench, after dawn, when he saw the Khitan people coming with shovels, he began to release arrows, these Khitan soldiers saw the ambush and hurriedly retreated, the commander of the city saw that he hurriedly ordered a group of cavalry to come to support, and when he saw this group of cavalry approaching the trench, the gunpowder hand that had been prepared long ago began to throw gunpowder, this gunpowder can be thrown at a distance of ten or twenty zhang like firecrackers, and after the gunpowder in his hand was shaken, they did not love to fight, Hurriedly retreated back into the mountain forest.

The Khitans were extremely annoyed when they suffered this big loss, but when they saw that the Great Zhou soldiers had retreated, they simply sent people to occupy this trench, and also prepared a lot of archers to prepare to attack the Great Zhou soldiers.

Who knew that for three nights in a row, they didn't even look at the shadow of the soldiers of the Great Zhou, just when they thought that the Great Zhou side had given up, that night, dozens of Kong Ming lanterns suddenly floated over the city gate in the west, just as these soldiers looked at the Kong Ming lanterns above their heads in a daze, these Kong Ming lanterns staggered into the sky above the city, and then began to fall one by one, and after these Kong Ming lanterns lit a few roofs, these Khitan soldiers understood the taste, and hurriedly shouted for firefighting.

Seeing this, the soldiers in the trench climbed out one by one to rush to the west gate to support, because the Kong Ming lantern was raised from that side, and it must be the soldiers of the Great Zhou who were making trouble.

Who knew that these soldiers had not yet arrived at the west gate, and the cavalry brought by Lu Zhu encountered, the men and horses on both sides fought, the soldiers on the city gate saw this scene, but they also opened the city gate and released a part of the cavalry to support, but many soldiers on Lu You's side brought crossbows suitable for shooting at close range, and also brought gunpowder, and after igniting it, they threw it into the crowd of the other party, and the opponent's combat effectiveness was immediately greatly discounted.

Seeing this, the Khitans hurried back to the city and closed the city gates.

After this day, Lu You began to order people to dig trenches again, but the Khitans did not dare to come out and seize the trenches again, but they proposed several times to fight with the Da Zhou side, but unfortunately, Lu You did not accept their challenge.

Three days later, the Khitan saw that three trenches had been dug on the side of Da Zhou, and they had begun to extend outward, so they ordered thousands of shield-wielding soldiers to come out, and these soldiers formed a shield formation, crossed three groups of trenches, and stood at the outermost extension.

They were followed by hundreds of infantry, each with a shovel or shovel in their hand, who had come to fill the ditch.

After the infantry, a cavalry contingent of thousands of men came out, all with bows and arrows in their hands.