attack city

Among the exchangeable materials, they are basically energy blocks. Only Anping City can accept food, so Xiang Yang contacted the other party first.

"How much do you have, and how much grain do you plan to exchange?" Xiang Yang asked.

"One hundred and fifty at most. You also know that one energy block exchanges for three village-level armor-piercing projectile materials." The Lord of Anping City said: "So, two thousand five hundred kilograms of rice."

The price of materials and directly made cannonballs is the same, because almost all cities use the system to automatically manufacture them and then move them out, which only requires more manpower.

"It's not cost-effective to use food. I'll use energy blocks."

One energy block and three village-level armor-piercing bombs are indeed the current basic prices, but the fluctuations in food are relatively large.

During this period, at the Crocodile Valley Trading Ground, a five-month harvest of rice varieties generally weighed about forty-five to fifty kilograms per energy block.

Xiang Yang thought about it and decided to use energy blocks, although he actually wanted to replace some of the grain, because if the grain is stored for a long time, it will become stale grain, which will reduce nutrition and make it easier for insects to grow.

But Anping City is obviously short of food.

"Otherwise, we will give you another meal of high-quality steel. We are a town-level city and have been cultivating the city for more than ten years. We are quite good at steelmaking."

The city lord of Anping City said: "You can rest assured about the quality."

Whether it is upgrading the city, repairing it, or making cannonballs, different qualities of steel consume different amounts. The better the quality of the steel, the smaller the consumption.

Of course, pig iron is also included. When using pig iron for repair, the consumption will be much greater than smelting it into high-quality steel yourself.

Anping City is at the town level, so they cannot make village-level armor-piercing projectiles because their city cannons are at the town level and have different calibers, so they can only use raw materials.

This recipe is known to most cities.

Unlike artillery, the rules for city cannon shells are well known because all cities have them, so this item is traded frequently.

"Let's test the quality of your steel plates first," Xiang Yang said.

The steel here is made into steel plates, a rectangular piece with specific length, width and thickness. The weight of each steel plate is also determined, and the error depends on the other party's process and technology.

Since Anping City must trade with grain, Xiang Yang is of course happy to do so. Anyway, Shenlong City is also short of steel.

Because the demand is so great, most of the steel obtained from Western Forest City is used to repair damage to the city.

If there weren't a lot of metal trophies, the consumption of this battle would be much higher.

"Okay, we are near the entrance and exit of the plain. Let's go to the beach to meet together." The Lord of Anping City said.

"no problem."

Xiang Yang directed Shenlong City to join Anping City over there, and then called Li Sichen and Yu Bin, asking Yu Bin to escort Li Sichen out to inspect the opponent's steel plates.

Anping City's smelting technology is indeed good, and their steel is much better than what they got from Western Forest City before, so the sale is concluded.

Xiang Yang made another deal with the other party, exchanging 6,800 kilograms of rice for 30 tons of steel plates.

Steel is not very expensive, but it is the most in demand of all metal resources. Thirty tons of high-quality steel can be used for a period of time.

If you go to the Iron Sand Continent, it will take at least half a year and you will have to bear a lot of risks.

Although some places in the Iron Sand Continent are relatively safe, accidents always happen.

Next, Xiang Yang continued to purchase armor-piercing projectiles, this time using energy blocks. One energy block had three shells, and he got two hundred armor-breaking projectiles and one hundred armor-breaking projectile materials at once.

Including the original ones, there are now a total of 750 rounds of usable armor-piercing shells, 280 of which are finished artillery shells.

This much is basically enough.

After settling the issue of artillery shells, Xiang Yang continued to arrange urban artillery training. This training was mainly focused on Yu Bin and Gao Hongzhan, but others also had to participate.

Of course, this also includes Xiang Yang and Bai Qianxue. Although they are very strong, they still need to be trained from time to time, otherwise they will become rusty over time.

The number of training bombs is also declining rapidly. In addition to concentrated training, there will also be demand in the future.

Xiang Yang thought about it and bought some again. One energy block for training bombs can buy four, so he spent 25 energy blocks and bought one hundred.

They all have finished ammunition, no materials are needed this time, and they also provide training on how to manually load the shells. At the village and town level, this method is still quite popular.

Of course, loading this is very laborious, and usually requires the cooperation of several people.

It can still be used at the county level, but because the shells are too big and heavy, the speed will drop significantly and it is easy to make mistakes. Some cities do not like to do this.

Yu Bin's ability is obviously much stronger. He knew basic operations before, because he has operated mortars and various shoulder-fired ammunition, so he became familiar with it quickly.

It only took a few days to basically master it, while it took Gao Hongzhan more than ten days.

But after learning it, Gao Hongzhan was much better than Yu Bin in terms of accuracy and aiming speed, especially when dealing with long-distance fixed targets.

Although there is a system and there is no need to get close, urban artillery is still a technical job, including aiming, coordinate calculation, and various ballistic calculations.

The ballistic trajectories of close-range bombardment and long-range bombardment are also slightly different.

Gao Hongzhan, a college student and a science student studying computer hardware, has obvious advantages in this regard. He has a good feel for the entire city cannon system.

The reason why it is so slow is that too much time is spent on learning the various principles of urban cannon.

After more than ten days of continuous training, I have basically become proficient in urban artillery, but proficiency alone is not enough.

Because in actual combat, both sides are moving, as well as aiming speed, psychological factors during combat, coordination, etc. These still require continuous practice and adjustment.

On this day, Xiang Yang was still in the control room, training urban artillery with others, and Li Sichen's voice came from the internal communication channel.

All the base blanks used in the construction of new urban combat weapons have been produced. Currently, they are considering the polishing method of the inner groove and the method of fixing it on the outer wall of the city. Li Sichen wants to discuss it with Xiang Yang.

Because Li Sichen is new here, he doesn't know what basic technologies Shenlong City has mastered, and he also needs Xiang Yang in terms of cooperation between different departments.

"You continue to practice, I'll go to the blast furnace." Xiang Yang turned around and left, going to the blast furnace.

Li Sichen placed all the base module blanks in the largest warehouse and stacked them up, occupying most of the space.

Each base module is ten meters long and five meters wide, with a few curvatures, and then linked together to form a complete semi-ring-shaped base.

It is larger than the original design, but the size of the giant saw will not change, but the sliding part in contact with the base will be larger, because Li Sichen is afraid that the base will be too small and the saw will not be strong.