Qin An and Jiang Bao served in Dayi County, the difference is that Qin An served in the iron ore cave in Heming Mountain, and because of his blacksmith skills, he was engaged in the quality control of iron ore, which was also a technical job.

Jiang Bao was assigned to the military factory in Dayi City because of his education, which belonged to a management position. Although Ouyang Xuan has attached great importance to cultural education since its inception, literacy classes are not as good as systematic cultural learning.

In addition, the Thunderbolt Army is expanding too fast and urgently needs clerical management personnel, so Jiang Bao is naturally very welcome to a teaching gentleman.

In fact, in addition to Qin An, Jiang Bao and others who were sent to Dayi to serve in labor, the Thunderbolt Army also sent a large number of personnel to participate in the construction of Dayi.

Among them are refugees, construction craftsmen, and managers and technicians of factories and mines. Dayi City has become the third city under the rule of the Perak Army, the first two being Chongqing Mansion City, where the headquarters is located, and Qiongzhou City, the economic and commercial trade center.

It is now late September and the autumn harvest has been completed. During this period of time, the Mongol army showed no signs of attacking the Perak army, and only a small number of scouts and cavalry floated across the Jinma River and the South River, but under the blow of firearms, they did not dare to approach the city and the cantonment point at all.

According to Dong Hu's reconnaissance, the Mongolian army in Chengdu was grabbing food and building warships during this time. There is also unreliable information that the Mongolian army is also trying to produce firearms, and they have tried to produce grenades with reference to the earth-shattering thunder of the Jin Kingdom, and I heard that they are trying to make artillery.

After the defeat of Yokohara Fort, the secret one lost most of its power, and now the power of Western Sichuan fell into the hands of Liu Heima and Baiyan Badulu.

According to the orders of Möngke Khan, he led his army to attack eastern Sichuan. In the eyes of the top brass of the Mongolian army, although the firearms of the Perak army are powerful, after all, there are few soldiers and generals, and they only occupy two or three states, which is just an itch for scabies.

And taking Chongqing Prefecture and going down the river to Lin'an is the correct strategy. Out of fear of the Perak Army and the Jiading Fu Army, the new army marched into eastern Sichuan not along the Min River to the Yangtze River, but in the direction of Jianzhou, and in Zizhou the army divided the water and land routes to Xuzhou.

Taking advantage of this rare period of stability, Ouyang Xuan focused his energy and focus on internal affairs such as political power building and industrial and agricultural production.

According to the priorities of affairs, he shuttled non-stop through various cities and reclamation points, and the first stop was Dayi City.

In the planning, Dayi will become the future military industrial base of the Perak Army. Compared with other cities, Dayi has incomparable advantages in geography, minerals, water transportation, water conservancy, etc.

From the geographical point of view, Dayi is located in the middle of Qiongzhou City and Chongqing Mansion City, 40 miles away from each of the two cities; From a security point of view, Dayi City is located in the hinterland of the control center of the Perak Army, with the towering mountains in the north, and the Jinma River, Wenjing River, Nanhe River, and Xiejiang River in the east and south. In terms of minerals, the ore types and reserves of Heming Mountain and Wuzhong Mountain in the north of Dayi City are far richer than those in Jiguan Mountain, and there are nitrate, copper and lead-zinc ore urgently needed by the Perak Army, and it is especially worth mentioning that the quality of iron ore is particularly high.

According to an old local blacksmith, there is a kind of miscellaneous iron ore mixed with a shiny substance, and if it is repeatedly smelted and refined, the iron made is not only extremely hard but also not easy to rust.

Ouyang Xuan was overjoyed when he learned the news, he knew that the so-called miscellaneous ore was chromite, which was the raw material for making stainless steel.

Although it is not possible to craft stainless steel at the moment due to technical reasons, it can be used to craft weapons to greatly improve the quality; From the point of view of traffic conditions, Dayi City is not only connected with Chongqing Fucheng, Huojing, Qiongzhou, Hengyuanbao, Xinjin and other places, but also can be connected to various cities through the Xiejiang River close to the city, which is especially important for the transportation of bulk goods.

Ouyang Xuan's decision to use Dayi City as a military base also had an important consideration, that is, the issue of power.

At present, the mechanical manufacturing of the Perak Army has begun to take shape, but at present, it mainly relies on people and animals as the power, which is not only inefficient but also cannot be manufactured at all with large parts.

Ouyang Xuan knew that the steam engine or even the motor was of course the best power, but the current level of technology could not do it at all, so the next best choice was hydraulic.

After investigation, several mountain streams near Dayi City not only have turbulent water flow and large water volume, but are especially suitable for water storage and damming.

After solving the power problem, it will be possible to build forging machines, hydraulic presses and various machine tools in batches, which will greatly increase the production capacity of industry, especially the production capacity of military industries such as artillery and muskets.

In order to ensure that military production was not interrupted, Ouyang Xuan did not order the military factories in Liuliba and Wanjiaping to be moved to Dayi, but only moved some tools and machine tools, but moved most of the technical personnel to the bottom of the mountain, and selected hundreds of blacksmiths, carpenters, and other skilled personnel from various counties to enrich the military factories, and implement training while working, in order to achieve an increase in military production capacity as soon as possible.

It's just that Ouyang Xuan knows that the accumulation of technology is a gradual process, and only by increasing investment will the quantity become a qualitative change.

Compared with technological breakthroughs, technology diffusion is much easier. Therefore, in addition to strengthening the all-round examination of the background, conduct, and family history of the personnel entering the military factory, the Perak Army has also taken strict measures to prevent technical leakage.

If the drawings and recipes are managed exclusively by loyal and reliable people, military personnel are not allowed to leave the confines of the Thunderbolts.

Passes are implemented for personnel entering Dayi City, and there are strict regulations on entering and leaving the factory area, and even core technical personnel are not allowed to go out of the military factory.

This is not because the management of the Perak Army is not humane, but because the people who want to steal the technology of the Perak Army have never been cut off.

Since the beginning of this year alone, Dong Hu's counterintelligence company has arrested more than 20 spies who tried to steal firearms technology, and these spies were sent by Mongolia, Yu Xing, and even Liu Zhen in southern Sichuan.

For the Mongol spies, Ouyang Xuan's order was to be executed immediately, and as for the other spies sent by the Song army, they were to serve life labor in the mines.

According to the military layout plan, the Perak army will have three military factories in the future. The first is Liuliba, the birthplace of the Perak Army, where a small munitions factory will be kept.

Due to the iteration of technology, the old grenades and fortress guns are mainly produced here, which are mainly used to supplement the artillery of the forts in the Cockscomb Mountain.

After the battle of Hengyuan Fort, the Thunderbolt Army successively moved the artillery in the Jiguan Mountain to the periphery such as Guan Kou Village, Sandu Shui, Baizhang City, Pujiang City and other places, and even the artillery of Wanjiabao was empty, and there were only a few artillery pieces in Hengyuan Fort in the entire Jiguan Mountain; The second is in Qianjiazhai.

At this time, the armed caravan had moved to Qiongzhou City, where transportation was more convenient. Ouyang Xuan saw that Qianjiazhai was easy to defend and easy to attack, and easy to keep secrets, so he moved a little military production capacity over.

The weapons produced by the military factories here are also old-fashioned artillery and grenades, which are mainly used to supplement the city defense forces in the direction of Qiongzhou, and can also be used for trade; The third and most important military factory was in Dayi City, but not in the city but in a ravine on the edge of the city, both for secrecy and for defensive purposes.

The Thunderbolts also built a castle at the only exit from the ravine where the munitions factory was located. This castle is smaller than Yokohara Castle, but its defense is even better.

In addition to the weapons research institute, there are three factories with hundreds of people each, which produce new types of artillery, grenades, and muskets, and their technology and production capacity far exceed those of the other two military factories.

In fact, Qianjiazhai and Liuliba can only produce old-fashioned weapons, in addition to the reasons for tools and equipment, the most important thing is that important strategic resources such as copper, refined iron, mercury, and nitrate should be selected to meet the needs of Dayi military factories.