The prisoners captured by Yang Jiujin were handed over to the personnel of the counter-espionage company for questioning. The so-called "professional people do professional things". Naturally, there is a set of professional means and professional tools for counter-espionage interrogation. In terms of interrogation procedures and methods, Yang Xiucai, who is in charge of justice, once consulted Ouyang Xuan on the issue of extorting confessions by torture. Ouyang Xuan's tone was that the judicial cases within the Perak Army belonged to internal contradictions among the people, and confessions should not be extorted by torture, so as to prevent unjust, false and wrongly decided cases caused by torture. However, the enemy's spies, spies, and the war acts of the Mongolian army are contradictions between the enemy and us, and torture instruments can be used according to the situation, and traitors cannot be tolerated. Dong Hu, the spy leader of the Thunderbolt Army, is also a die-hard fan of Ouyang Xuan, so he naturally followed the instructions and used the torture methods well.

It's just that this Mongolian army craftsman is not a treacherous person, and after a little questioning, he is like pouring beans into a bamboo tube, and he will tell what he knows at once. According to his confession, this black ball is called Heaven-shaking Thunder, and the shell is cast iron. The main ingredient is gunpowder, and powders such as arsenic, tung oil and poisonous weed powder are also added; The white ball is called Burning Sky Thunder, and the main ingredient is a kind of grease and gunpowder is added. This oil is produced in the underground desert of the Western Regions, refined by the Hui craftsmen in the Mongolian army, and ignites when it encounters fire, and does not extinguish when it encounters water. Due to the remote production area and inconvenient transportation, and the difficulty of refining, there are not many of these things in the Mongolian army. In his eagerness to open up the passage with Weimao, Liu Heima sent back the craftsmen to bring grease to the Mongolian military camp in Guankou Village.

When Ouyang Xuan learned of the results of the interrogation, he was rushing to the ship of Xinjin City. He now divides his time other than eating and sleeping into four parts, the first of which is of course dealing with complicated affairs. Although Li Shuang, Lu Dezhi and others have shared a huge amount of affairs, the workload is still extremely huge. The second part is to go to random factories, mines, forts and military important places to inspect the work and solve practical problems. The third part is to participate in military training, and the most important thing in the struggle against Mongolia is force, which is the only language that the Mongols understand. Eating, living and training with soldiers can not only enhance the cohesion and centripetal force of the Perak army, but also strengthen the physique and enhance the ability to resist diseases and prevent accidents. The fourth part of the time is spent guiding scientific research and going to the state capital to give lectures. The most important thing in scientific research is actually the direction of scientific research, following the path of predecessors is better than crossing the river by feeling the stones, the efficiency is too high, with Ouyang Xuan, the development of the Thunderbolt Army not only surpasses the times, but also enjoys the "late-mover advantage". Going to the state capital to study and give lectures is to broaden the horizons, horizons and patterns of these intellectual elites, so that they can more accurately grasp the concepts, thinking and methods of science.

On the way from Chongqing Mansion to Xinjin City, Ouyang Xuan saw a lot of boats fishing, far exceeding the usual number, and even many naval vessels were involved. Curious, he asked casually. Li Shuang, who was traveling with him, explained that there was very little rain this winter, and the water level in rivers and reservoirs had dropped a lot, and even some swamps had dried up by half. The water level has dropped so much that the fish have nowhere to hide, so it's easier to catch fish. Li Shuang then lamented that fortunately, the military and political meeting decided to overhaul the water conservancy and dug a lot of ditches and ponds, although the drought had caused an impact, but still guaranteed grain production.

Li San'er, who accompanied the tour, also said that the dam built for the Dayi Arsenal also did not store enough water, which affected production capacity. The words of the two made Ouyang Xuan suddenly think of the conversation with Boss Qian some time ago. When Ouyang Xuan was worried about the safety of the return journey of the caravan in the Fan District that traded in Lizhou and Diaomen Village, Boss Qian relieved him and said that because of the scarcity of snowfall this year, the road leading to Dajian Furnace and other places in the Fan District was not closed and could still be passed.

The closer the ships got to Xinjin City, the more sailors they saw fishing. Ouyang Xuan was displeased at first, and then his face became more and more gloomy. When he arrived at Xinjin City, he saw a group of people on the dock surrounding a naked black man. When I got closer, I saw that this black man was Liao Loach, and he was holding a big carp weighing more than ten catties in both hands. The big carp was covered in golden armor and sparkled in the winter sun. Liao Loach saw that it was Ouyang Xuan who walked up to the dock, so he hurriedly ran over while holding the fish and shouted: "Brother Xuan came just in time, I will take this fish to make soup and drink it at noon." He rushed to him, but Ouyang Xuan didn't stop talking to him, but walked forward with a black face without saying a word. This made Liao Loach stunned on the spot, Brother Xuan, who has always been approachable, why is this like today?

Ouyang Xuan did not go straight to the Navy Brigade Department, but suppressed his anger and continued to inspect Xinjin City, which made Huang Dagen, who rushed to hear the news, puzzled, and Li Shuang and Li San'er, who accompanied him, vaguely guessed the reason, but they didn't dare to explain it to Huang Dagen. In the dry dock of the shipyard at the east gate of the city, seeing the scene of work with a loud noise, Ouyang Xuan's gloomy face stretched slightly. In the dry dock, Xia Dagen, who is less than sixteen years old, is leading his men to renovate ships. This Xia Dagen became a platoon commander of the escort company at a young age, not only because of his combat bravery, but also because he was good at thinking.

Seeing Ouyang Xuan coming, Xia Dagen introduced the newly renovated fire war ship to everyone. He used to know some words, but after a period of evening school, reading was no longer a problem. When he was promoted to platoon commander, he was transferred to the training camp for a period of time. According to the Perak Army system, officers must go to the training camp for training and pass the examination to be promoted. Xia Dagen was extremely studious, and after listening to the "General Essentials of the Martial Arts" taught by the battalion commander Zeng Yong, he was extremely interested in the water battle ships, tactics and weapons mentioned in it. As soon as he returned from training, he took people to transform the boats of his platoon.