But in fact, Wang Lun has another idea, in his original world, he once watched a movie, starring Mr. Jackie Chan, there is a way to quickly build the city wall, Wang Lun is ready to try it here, maybe it works, if there is no problem with the implementation, then it can be suggested that Marshal Zhao use it in the construction of this city.

The first point of the implementation of this method is to build the equipment for handling and lifting, the simplest is to use the principle of gears, this is not difficult to do the physics subject is very good Wang Lun, this guy is also said to do it, soon an architectural drawing was drawn, the drawings are painted on a hoisting tool, the main body is made of wood, there are huge wheels to put down as a horizontal winch, manpower pushes the horizontal winch to produce rotation, and then through the large wooden gear transmission, the rotary motion is transmitted to the winch of the cable, Then the winch drives the cable to be retracted, so as to lift the goods at the other end of the crane, which can be regarded as a simple and original hoist.

After this architectural drawing came out, Wang Lun quickly found the soldier who was good at carpentry in his army, and simply told him this, and after explaining it to him, he asked him to find some carpenters like him to build this tool together, this soldier quickly put into work and production, and brought a lot of people, in fact, people from all walks of life came to Dongling City in order to fight the border, it should not be difficult to find some carpenters, Wang Lun found a logistics blacksmith, let them make some iron bars, and leave holes on it, These iron bars were used to make a large square box, the box was left with a cover, and soon the boxes were also ready, but the hoist was a little slow to build, during this time, Wang Lun commanded the rest of the soldiers to dismantle all the walls of their section, and also clean up these places. After some calculation, he asked the blacksmith to make a few slightly smaller iron crates, which could be lined up tightly, leaving no space at all.

Wang Lun's actions were soon known by Marshal Zhao, after all, it takes a lot of iron tools to make it, but Marshal Zhao didn't say anything, Marshal Zhao had already seen that Wang Lun had something to do with this guy when he expressed his opinions before, and he didn't know it, and let him repair the city wall to test whether he had real talent and learning, if it was just empty talk, then he couldn't be entrusted with a heavy task, but now it seems that this guy has something, just from the very high hoisting tools, It's beyond their knowledge.

Marshal Zhao didn't say anything, but the generals below had their own opinions, and they didn't understand what this new Baihu Hou wanted to do, so they just proposed to Marshal Zhao that Wang Lun use iron tools, so that their iron tools were a little out of supply, and Marshal Zhao didn't say anything but ordered to go down, so that the blacksmiths should not only make Wang Lun's things, but also divide a part to do what others need.

Wang Lun's hoist was quickly built, and after it was erected, it was higher than the city wall, and then, Wang Lun arranged three teams of soldiers to take turns to push the horizontal winch, a team of ten people, one person was responsible for pushing a horizontal bar on the winch, and then ordered the rest of the soldiers to make the iron bars into a row of iron crates at the position of the city wall, which happened to be three large boxes and a small box, and one layer was a row, and the width of the iron bars stacked together was just a little shorter than the excuse city wall, and Wang Lun didn't say anything, The soldiers were instructed to open the lid of the crate box, and to fill it with the remnants of the city wall that had been dismantled before, and when the box could not fit in, they continued to get the next layer, and little by little the crate was piled up to the same height as the city wall, and then let all the soldiers rest for a day, and now the city wall looked like all the crates, but a little smaller.

Wang Lun and they started work half a day later than the people around them, plus the time to measure the length, make hoisting tools and forge iron bars, it was basically two to three days late, but they put all the iron crates and stopped them a piece faster than the people around them, and now around him, except for a complete city wall that has not been demolished to mark the height of the city wall, the rest of the city walls under construction have only reached more than half of their positions, and some are even slower, after all, it takes time to mine mountain stones.

After Wang Lun and they rested for a whole day, all the staff went into battle and began to smear the soil that Wang Lun asked them to stir on the outside of the iron crate, the process was very fast, it didn't take much time, this was completed, and then, Wang Lun let them rest again, and waited until the third day Wang Lun came to touch the city wall, and after confirming that the soil would not fall off when it dried, they started to work again, building the arrow tower.

The catapult was not transported during the construction of the tower, but Wang Lun had already confirmed the size of the catapult to be installed here and the space it needed, so he built the iron crate again, filled the waste stone, and smeared the earth. When they were all done, they were still a brick or two away from the nearest wall.

After Wang Lun built the city wall he was responsible for, he went to the marshal's mansion to return to his life, Marshal Zhao was startled when he heard that he had come to restore his life, thinking that he had heard it wrong, but the result was positive, Marshal Zhao personally came to Wang Lun's position, and from a distance you could see an arrow tower and a section of the city wall standing there, a piece higher than the surrounding city wall.

As a result, in the afternoon of the same day, Marshal Zhao summoned all the people responsible for building the city wall to the council room, and Wang Lun explained his method, coupled with the facts in front of him, Marshal Zhao asked the rest of the people to immediately change the original way, and everyone obeyed the marshal's advice convincingly, and soon the four city walls were erected one by one hoisting tools, and the team of soldiers led by Wang Lun became advisers, guiding other soldiers in the use of these tools, It turned out that the generals who were still shouting that Wang Lun had taken up too many blacksmiths and served him alone stopped talking, but instead went to the blacksmiths to forge iron bars according to Wang Lun's method.

The irons are rapidly consuming, and Marshal Zhao also ordered to remove half of the mining troops into the construction troops, and soon the first layer of the outer city wall was completed, and the moat had been filled in before the start of construction, and this outer city wall was raised at the location of the original moat, and a moat was re-excavated outside the city wall, and a team of water trucks drove out of the city to the bank of the West River not far away to transport water to fill the moat, and when the moat was excavated, Wang Lun once again stood up and made a suggestion, and when the generals heard this suggestion, they instantly looked at Wang Lun with wrong eyes.