During the two months that Ouyang Xuan was out, all the undertakings under the rule of the Thunderbolt Army were carried out in an orderly manner. In agriculture, the hungry people responded positively to the strategy of "taking grain as the key link" by sowing 3 million mu of wheat and more than 600,000 mu of broad beans, peas, and rape after the autumn harvest, and planting a large amount of pasture grass in the hills of Wugenshan, Changqiu Mountain, and Pengshan County. At present, the cultivated land in the area under the jurisdiction of the Perak Army has basically been planted. Being able to cultivate so much land in more than a month is not only because of the high enthusiasm of the military and the people, but also because of the large amount of animal power and the wide application of high-quality iron farm tools. At present, under the rule of the Thunderbolt army, there are more than 10,000 horses, cattle, mules and other large livestock, most of which can be used for farming.

In order to improve efficiency, the agricultural department of the Perak Army has implemented classified management of cultivated land, and the land in the plains has been intensively cultivated, using full seeds, and giving priority to the supply of water conservancy facilities and fertilizer. As for the sloping cultivated land in the hills and mountains, the yield per mu is much lower than that of the plains and it is more susceptible to bad weather. At present, in the agricultural production of the Perak Army, in addition to the unpredictable natural disasters, the most worrying thing for Li Shuang is the problem of fertilizer.

"A crop is a flower, and it all depends on fertilizer." To increase grain production, in addition to varieties, fertilizer is needed. It takes a long time to breed good varieties, so increasing the use of fertilizers is the only way. Adequate fertilizer can more than double or more food production. Li Shuang organized manpower, collected human and animal manure extensively, dug pond mud and used grass to make fertilizer, but this fertilizer was still far from enough. The technology of manufacturing chemical fertilizers is not complicated, and Ouyang Xuan also knows the general production process, but it is very difficult to produce it. In addition to the lack of raw materials, there is also a lack of systematic chemical base and production equipment.

Industrial production faces the same problem. Under the guidance of Ouyang Xuan, the research institute has made many scientific research achievements, but it is also impossible to industrialize production due to the lack of raw materials or production equipment, such as new gunpowder such as T.N.T and Acroic acid, as well as technologies such as sealing the barrel and breech. These things can only be produced in small quantities at the moment, and they are so expensive that they simply cannot be mass-produced. Ouyang Xuan has instructed the medical school to cultivate penicillium, and has also successfully blown glassware for cultivation, but with the current equipment, penicillin cannot be purified from it, and the production is sealed and stored for a long time.

Compared with the difficulty in the production of high-tech products, the production capacity of coal and iron primary products is now showing signs of surplus. At present, the Thunderbolt Army has dozens of mines, large and small, of which a considerable part are coal and iron mines. Due to the widespread use of gunpowder in mining, the mining efficiency of mining is dozens of times higher than that of manual excavation, and a large amount of iron ore and coal can be produced every day. Since the main force of the mine was prisoners of war who were in forced labor, the Thunderbolts naturally could not let them sit idle, and except for a few rest days, the mine production did not stop. The iron ore and coal mined from this mine are refined into refined iron and coking coal, some of which are used for industrial production, and the other part is stored in warehouses, and over time, the amount is extremely considerable. If it weren't for the signing of agricultural tools and cold weapons with various tribes in Miaojiang, this inventory would only increase.

Compared with the surplus of coal and iron, cement is still in short supply. At present, the Perak army is in a period of rapid development, whether it is to build forts and guard towers in the military, or to build houses, schools, and factories, the demand for cement is huge. In order to meet the huge gap, Li Shuang has ordered people to build cement factories in Dayi, Baizhang, Pengshan, Qiongzhou and other places. There are still shortages of nitrate, mercury, copper, lead, etc., especially the shortage of copper is still huge. Among other industrial products, glass products are extremely popular and have high profits, and have become the new trump card products of the trade team.

The production of the arsenal is tepid, and there is obviously a gap between the requirements of the military. In fact, the military has no opinion on the amount of grenades, mines, and artillery shells produced, and these firearms can be produced very quickly as long as the raw materials, especially the firearms, are guaranteed. The military was not satisfied with the production of muskets and artillery, and Li San'er, who was in charge of industrial production, also had a bitter remark about this. Although the raw materials for the production of muskets and artillery are sufficient, the production process and technology are relatively mature, but the production of barrels and barrels has not been raised, the fundamental reason is that although the boring and milling method is selected, it consumes a lot of man-hours, and the requirements for production personnel are also high. Faced with pressure from the military, he had to increase the production space and machine tools on the one hand, and on the other hand, step up the training of skilled workers, but these will take a long time.

The military's revenge is actually quite reasonable. Yu Zhu led the army to Liuqiu, taking not only a thousand elite combat power, but also a large number of firearms. Ouyang Xuan has extremely strict requirements for the quality of firearms, and Rao is so, and the number of shots of muskets and artillery guns produced is also about three hundred. Beyond this number of times, in addition to the inaccuracy caused by rifling wear, it is more likely to blow up the chamber due to metal fatigue. Since Liuqiu was far away from overseas, Ouyang Xuan ordered the best muskets and artillery of the whole army to be deployed to Yu Zhu's department to ensure its combat effectiveness. However, in this way, the original firearms of the brigades were insufficient, and the quality of the remaining firearms was not satisfactory.

The naval brigade with the largest drop in combat power. The main force of the 1,000 people who went to Liuqiu was the Liao Loach Battalion of the Navy Brigade, and this battalion was also the strongest battalion in the Navy Brigade. Originally, there were only 1,500 people in the naval brigade, and one-third of them were transferred away at once, which was really a great loss of vitality. The navy is a technical branch, and if you are not familiar with the water on board, you will not be able to adapt to it in three or five months, let alone become an elite soldier. When Ouyang Xuan was still in Banzhou, the Mongolian army sent scouts to harass frequently, and Huang Dagen ordered the arsenal to give priority to equipping the navy with firearms. The rest of the brigades had no objection to this, only Cao Ergou muttered a few words, but was scolded back by Huang Dagen.

Huang Dagen's words to Cao Ergou were only one sentence: "There are a lot of good horses in the field brigade at present", and the war horses of the Thunderbolt Army, except for the captured Mongolian horses, are all from the Tibetan region. When the cavalry battalion of the field brigade first became an army, there was a great shortage of horses, and the main problem was to solve the problem of whether there were or not, so the quality was uneven, and it was better to have inferior horses than no horses. Later, with the increase of horses, the inferior horses were gradually eliminated and used as post posts, factories, and mines. After Ouyang Xuan became the deputy envoy of Chengdu to pacify and obtained the right to deal with the affairs of the Sichuan border, the trade between the Perak army and the Tibetan region increased dramatically, and more horses were obtained. Cao Ergou picked a lot of good horses from them to eliminate the sick and disabled horses in the army. The strong horsepower naturally increased the combat power of the cavalry battalion a lot, so when Huang Dagen mentioned the horses, Cao Ergou didn't dare to say anything.

It is said that although the caravan purchased horses from the Fan District this year, although it was generally smooth, there were some twists and turns, and it almost clashed with Yazhou. Cao Zhizhou was naturally extremely unhappy with Ouyang Xuan becoming his nominal boss, but he had no choice but to instruct his henchmen to make some shady tricks. It's just that the Thunderbolt army caravan is very cautious and guarded, and they are willing to throw money, so Cao Zhizhou's minions did not find an excuse, but two of them accepted the caravan's money and secretly reported the news. However, the conflict caused by a pig gave Cao Zhizhou an excuse to detain the caravan.