In between the training of the Diaoyu City artillerymen, the Perak Army personnel were not idle. Ouyang Xuan asked Zhang Jue and Wang Li for advice on their combat experience in dealing with the Mongolian army, and also learned about the relevant current situation. Although he knew the trend of history, he did not know the details of the Sichuan War of Resistance against Mongolia, after all, the history books only recorded approximately, and some of the language was vague, and it may even be diametrically opposed to the real situation. There is a saying that "history is a little girl who can be dressed up", so Ouyang Xuan does not believe in history books, after all, "it is better to believe in books than to have no books". Diaoyu City is located at the intersection of the three rivers, and it is only more than 100 miles away from Chongqing, the center of Sichuan's anti-Mongolian resistance, so it has a much better grasp of the dynamics of the Mongolian army than the Perak army living in western Sichuan.

In a conversation with Zhang Jue and Wang Li, Ouyang Xuan learned that since Meng Ge entered Lizhou in the autumn, he continued to attack the city and plunder the land. Not long ago, he broke through the Kuzhu Pass, trapped Changning Mountain (now Cangxi, Sichuan), and killed the guard Wang Zuo and his son. The Mongol Han army led by the kings Mo Ge and Shi Tianze went south from Micang Pass in Yangzhou into Sichuan, plus the Mongolian army led by Niu Xuan, and the Mongolian army on the three routes came directly in the direction of Chongqing. These three Mongolian armies have more than 100,000 elite soldiers, not only surpassing the Sichuan Song army, but also crushing the combat power. The Mongol army also invested heavy troops in the Jinghu battlefield and the Lianghuai battlefield, intending to take the Southern Song Dynasty in one fell swoop. If Sichuan is not protected, the Mongolian army will go down the river to threaten Lin'an, seeing that the Sichuan battlefield is in danger, so the Song court sent Lu Wende to lead a large army into Sichuan to support.

Hearing the name Lu Wende, Ouyang Xuan couldn't help but feel a move in his heart. Among the list of important ministers of the DPRK and China who he confessed bribes to Li Kaipeng was Lu Wende. Before his death in 1269, he had been the main general of the Korean and Chinese resistance against Mongolia. He was born as a civilian and started fighting against Mongolia, and in his more than 30 years of anti-Mongolian career, he moved to Jianghuai, Jinghu, and Sichuan, and made a lot of military achievements. However, he himself was extremely greedy for money and power, and was good at forming parties for personal gain, promoting a large number of families and fellow villagers to become generals and colonels, and colluding with the powerful minister Jia Yidao to form a huge military group.

The drink bottle that Ouyang Xuan handed over to Li Kaipeng was given to Lu Wende, and the jacket was used to bribe Jia Yidao. As for the rhetoric of bribery, Ouyang Xuan also explained: "This treasure is a magic weapon in the extreme west, born from the essence of gold, and it will not ......get wet when it encounters water." In my memory, after Lü Wende reinforced the Sichuan battlefield, Jia Rudao led his troops to Ezhou as the right prime minister to fight against Kublai Khan, the younger brother of Möngke Khan, who led the army to invade the Jinghu battlefield. Li Kaipeng should be able to find the two of them on the way to Lin'an.

In between teaching the shelling, Huang Dagen led the sailors to learn water warfare from Diaoyu City. Among the naval forces of the Southern Song Dynasty, the Jinghu battlefield was the strongest, followed by the Lianghuai battlefield, and the Sichuan battlefield was the weakest. In the Sichuan battlefield, the eastern Sichuan was the strongest, followed by Xuzhou and Luzhou in southern Sichuan, and the naval forces in western Sichuan such as Jiading Mansion were the weakest. It is not surprising that the distribution of the strength of the navy army, after all, the wider the rivers and lakes, the more frequent the war, the navy army is naturally the strongest. Mongolia, which had lived in the interior of the north for a long time, did not have a naval army before, so it naturally suffered repeated losses in water confrontations with the Jin Kingdom and the Southern Song Dynasty. Of course, the Mongols naturally understood the principle of "south ship and north horse", and have been developing a naval army, and gradually achieved results, such as defeating the Xuzhou naval army with more than 500 warships. The strength of the Xuzhou Navy is stronger than that of the Jiading Navy Army, and it is far superior to the Thunderbolt Army, but it was defeated by the Mongolian Army in one fell swoop. Although the land soldiers and horses of the Mongolian army played a decisive role in this battle, the rapid progress of the Mongolian army and the navy cannot be erased.

Since Ouyang Xuan was safe and sound in Diaoyu City, the special forces soldiers accompanying him practiced martial arts with Wang Jian and Zhang Jue's personal guards. The two of them were not only guards, but also a key force in counterattacking when the city defenses were breached, and sometimes carrying out night raids on enemy camps and destroying enemy siege equipment, with a mission similar to that of the Thunderbolt special forces. Only Li Kaipeng's team is a little idle. Diaoyu City is the seat of Hezhou, but it is a fortress military city, and there is no commercial activity, so they have to chat with people and collect information about customs and customs.

After the Diaoyu City gunners were proficient in handling the guns, Ouyang Xuan politely refused Zhang Jue's retention and set off to return. Before returning home, Ouyang Xuan ordered all the shells and gunpowder to be given to Diaoyu City, except for ammunition and weapons for self-defense. The gunpowder that the Thunderbolt Army used for the fortress cannon was purified and refined with nitrate and sulfur, which was prepared in proportion to charcoal, and was granulated after a number of processes, and then packed with waterproof oil paper according to half a catty, one catty, and two catties. Solid bullets are standard, and shotguns are also fixed, which can be fired quickly in wartime. In fact, Diaoyu City can also make gunpowder, and even have iron firearms and thunder, but the quality of its gunpowder is far inferior to that of the Thunderbolt Army, not only the ratio is rough, sulfur, nitrate and other raw materials are not refined, but also there is no granularization and other technological processes, so its firearms are loud and fireworks, and the lethality is poor. Ouyang Xuan also tried to guide the improvement, but seeing the current situation of the tools, personnel, and raw materials in Diaoyu City, it was not a short-term solution to reach the level of the Thunderbolt Army, and it would take a lot of time to experiment, so he had to give up.

As for the grenades, all of them were left to the Ministry of Commerce and Trade Liuqiu Company, that is, Li Kaipeng's team. With dozens of them in charge and far away from support, it is really difficult to carve out a world on their own. Therefore, in addition to giving enough start-up funds, the Thunderbolts also gave the best equipment, including a short musket and a large number of copper-shelled bullets. Since the arsenal simply did not have much stock, these short muskets and ammunition were urgently transferred from the soldiers of the reconnaissance battalion of the Internal Guard Brigade. The Mongolian army of the Innuyu Department has already controlled the water surface of the line from Chongqing to Fuzhou, so the personnel of Liuqiu Company will first go to the lower reaches of Fuzhou by land under the escort of Diaoyu City, and then go down the river by boat. Ouyang Xuan specially explained to Li Kaipeng that he should pay attention to the news of Lu Wende and Jia Yidao when going down the river, and he could go to Lin'an after meeting the two of them. Of course, the reason for meeting the two was not to give gifts, but to report on the activities of hundreds of Mongolian troops around Diaoyu City, and these information were all discovered by the Diaoyu City scouts with great difficulty. Although Li Kaipeng also knew the military intelligence entrusted by Zhang Jue, he still sealed it with fire paint and stamped the official seal of Hezhou.

Although there were sails hanging on the way back, the speed of getting on the boat was much slower due to the tracing of the water. At this time, it was the middle of November, and the water volume of the river was a little shallower unconsciously. Because the Thunderbolt army had just come down the mountain, various undertakings were in the stage of waiting to be revived, and the situation was changing too quickly during this time, Ouyang Xuan and Huang Dagen were also worried about their families, so the fleet did not dock at Shenjian City and Xuzhou City on the return trip, but sailed straight to the direction of Jiading Mansion. In their hurry, the Perak fleet did not pay much attention to the harassment of small groups of bandits along the way, and ignored them as long as they did not get too close, and let them follow. On the one hand, it is like an arrow, and on the other hand, most of the ammunition of the gunboats was given to the defenders of Diaoyu City, and the remaining ammunition was only enough for each cannon to be fired two or three times, so it was really not suitable to fight all the way.

Although there were few shells, Ouyang Xuan was not worried about safety on the way back, because there were still dozens of long muskets. When Ouyang Xuan was in Diaoyu City, he also had the idea of giving these muskets to Wang Li's subordinates, but considering that in the defense of Diaoyu City, muskets were not as good as bows and crossbows, and maintenance was also very troublesome. What's more, there are not many copper bullets, and when they are gone, they burn the root and bring them back. Due to the shortcomings of slow rate of fire and poor accuracy, the current musket must be used intensively on a large scale to fully exert its power. It's just that there is a huge shortage of muskets in the Perak army at present, and even the most elite cavalry infantry battalion under Cao Ergou still lacks more than forty percent of muskets.