As soon as the Perak navy ships approached Guan Kou Village, the defenders fled. First, the news of the defeat of Hengyuan Fort spread to Guankou Village, and then the secret Huoli led the defeated army to retreat from the Daojiangcheng ferry twenty miles downstream to Chengdu, and the people in the village were already panicked.

Just before the Perak warships arrived, the 200 Mongol cavalry guarding the fortress received an order to withdraw to Pengzhou, leaving only 500 new troops to defend the fortress.

Seeing the retreat of the Mongols, where are these new annexed troops willing to stay and eat shells? Some of them chased the Mongol cavalry, some fled along the official road to Wei and Mao, some fled into the nearby mountains and forests, and about 100 new annexed troops simply came to the river, and simply surrendered.

Huang Dagen sent people to take over the stockade with his troops, and left some warships to assist, while he himself took the boats to patrol the Jinma River to prevent the Mongol army from counterattacking.

The task assigned to him by Ouyang Xuan was to guard the river from Zhuguankou Village to Xinjin City, and cut off the connection between the Mongolian troops on both sides of the Jinma River, so as to ensure the next military action of the Perak army.

After the Battle of Yokohara Fort, Ouyang Xuan immediately convened a joint meeting of the military and the government. According to the strategy of the meeting, the Perak Army will use the water army to control the Jinma River, Wenjing River, and Nanhe River waterways, and then seize Pujiang City under this premise, so as to encircle the Mongolian army in Chongqing Province and Qiongzhou, forming a situation of closing the door and fighting the dog.

To say that this strategy is indeed bold enough, the encirclement area includes three prefectures (prefectures, armies) and 10 counties, with a population of about 100,000 people, about 3 million mu of fertile land, and more than 30 reclaimed points of the Mongolian army and the newly attached army.

These three places belong to the core area of the country of abundance, and the Mongolian army also attaches great importance to this anointed land, even if the secret fire is almost full of combatable troops to besiege the Thunderbolt army, there are still 800 cavalry and 2,000 new annexed troops stationed here.

After the battle of Hengyuan Fort, the 300 cavalry stationed in Chongqing Fucheng fled back to Chengdu, and there were still 500 Mongolian elite cavalry and 2,000 new annexed troops in the encirclement, which was still a force to be reckoned with.

If there is a field battle in the field, even if the Thunderbolt army is fully loaded, it will be more than lucky. In view of the characteristics of the Inner Mongolian Army in the encirclement, the plan formulated by the General Staff Department was to first attack the Mongolian army in Qiongzhou City with the main force under the condition of ensuring control of the Nanhe waterway, and at the same time send partial divisions to attack and seize the small cities of Yizheng, Dayi, Huojing, and the reclamation points of the newly attached army, so that the Mongolian army could not take care of each other.

After the military-political joint meeting, Ouyang Xuan led the army to Qiongzhou. The troops attacking Qiongzhou this time, in addition to the naval forces of Le Quanan and Liao Loach, the main force was the field battalion that had already been gearing up.

This time, the battle of Yokohara Fort shined again, which made the field battalion, which regarded itself as the first main force of the Thunderbolt Army, have a sense of crisis.

This time they went to Qiongzhou, but they were riveting, which was manifested in the fact that they were vigorously moving ammunition to the ship when loading the ship, and they also tried to carry the heavy artillery onto the ship, which made Le Quanan jump in a hurry - the ship would sink if it was loaded too much.

In the end, it was Ouyang Xuan who came forward to suppress the dispute: the field battalion only carried light artillery, and the ammunition only brought three bases, and the fire support was provided by the naval warships.

After the field battalion went to Qiongzhou, the task of guarding Yokohara Fort was left to the internal guard battalion. Dong Hu and the internal guard battalion were really not easy during this time, in addition to guarding Hengyuan Fort, the workload of more than 10,000 new annexed troops and civilian husbands in Toucheng was really too large, and it was impossible to screen them one by one in a short period of time, so they had to use cheap measures such as reporting rewards and mutual guarantees, and in this way, dozens of heinous people and spies of the Mongolian army were also found.

It is estimated that there are at least a hundred more such personnel, who are hidden deep enough to be discovered for the time being. In addition, Zhou Jianshen, the leader of the newly annexed army who surrendered, was also authorized by Ouyang Xuan to select 500 elites from the new annex army to form a return battalion to accompany the army.

As for the majority of the reformed soldiers and civilians, there was a much heavier work - fort building and stronghold construction.

According to the division of labor at the joint military-political conference, Yu Zhu was responsible for this work. Because Li Shuang's legs are inconvenient for the consul general, and he will also plan many complicated affairs such as the industrial layout and political power construction under the mountain, he is really busy.

If it weren't for the assistance of Yang Xiucai, Lu Dezhi, Li San'er and others, just dealing with the reformed population and the seized grain would have kept him busy.

Since the autumn harvest season is a month away, everything has to make way for the harvest. Therefore, Ouyang Xuan's request to Yu Zhu was to establish a series of strongholds along the Jinma River before the autumn harvest, which made Yu Zhu's face solemn.

The core of Ouyang Xuan's Yuzhu construction of Jiangfang is to renovate Guankou Village and build it into a fort as strong as Hengyuan Fort, and at the same time, it is also necessary to build strongholds in Daojiang County and Jiangyuan County.

In addition to building a small fortress in Sandushui, a naval wharf was also to be built. After the autumn harvest, this labor force will turn to fortify Pujiang City and build a series of strongholds along the Nanhe River.

After the completion of these works, it is necessary to assist in the construction and ....... of various industrial facilities in the plains. Although these projects are all by the river, cement, wood and other building materials can be transported by efficient waterways, and the safety is also protected by the naval gunboats led by Huang Dagen, but the management and coordination are still extremely heavy, so Yu Zhu brought ten backbone companies of the garrison battalion this time.

In addition to preventing people from inciting trouble, this is also to prevent harassment by bandits, and it is also to clean up the remnants of the Mongolian army who went to Guankouzhai and other places.

At present, the Mongolian troops in Daojiang County and Jiangyuan County have fled under the shelling of the naval army. On the way to the construction of the stronghold at Yokohara Fort, there were still new annexed troops stationed in Yongkang County and Qingcheng County.

After the Mongols defeated Pu Zezhi and reoccupied the two cities, they recruited bandits in the mountains to cooperate with the old and weak new annexed troops to defend the city.

Although the ten backbone companies led by Yu Zhu were the second-line troops of the Thunderbolt Army, they were more than enough to deal with these rabble.

After instructing Li Shuang and Dong Hu on the relevant matters in the mountains, Ouyang Xuan took the field camp and the Guizheng camp to take a boat from Hengyuan Fort down the river.

When passing by Chongqing Fucheng, he ordered Zhou Jianshen to take the Guizheng camp to recruit the defenders. When the Mongol cavalry defending the city fled, the 500 new annexes in the city also tried to flee to Chengdu, but they marched slowly on two legs, and were beaten back by the Thunderbolt army's warships when they reached Sandushui.

Now the hearts of the new attached soldiers in the city are floating, seeing the mighty warships in the river, they know that they can't hold it, and there is no way to retreat.

Most of the 500 new annexed troops went out of the city and surrendered, and dozens of them did a lot of bad things after joining the Mongol army, knowing that the Thunderbolt army would not spare it, so they secretly fled.

Surrendering without a fight, this kind of political offensive that seems to be a win-win situation for both sides, but Cao Ergou on the ship is quite puzzled.

In his opinion, these greedy and death-fearing wall grasses are really hateful, and they should be allowed to taste the power of new field artillery.

For this reason, Ouyang Xuan educated him fiercely. If you blindly kill indiscriminately, it will only make the new annex army resist desperately, and at the same time, it will also consume the strength of the Thunderbolt army.

Not to mention that labor is an extremely important resource, even if the Thunderbolt army takes Chongqing Mansion City unharmed, it will consume a lot of ammunition.

The raids on Chengdu and the battle of Fort Yokohara have already exhausted the ammunition. In fact, the production capacity of the Thunderbolt army's military factories is not saturated, mainly because the production capacity of nitrate is far from keeping up with demand.

Therefore, Ouyang Xuan's task for Zhou Jianshen, who accompanied him, was not only to recruit him, but also to go to the houses in various cities and reclamation points to scrape the nitrate.

Ouyang Xuan also knew that scraping nitrate was just a drop in the bucket, and to truly solve the problem of nitrate shortage, on the one hand, it was to find a mineral source, and he had ordered the mining company to prepare, and once the Mongolian army was annihilated, he would send people to Qingcheng County, Dayi County, Linqiong County, Huojing County in Qiongzhou to look for minerals.

On the other hand, he is also preparing to start making nitrate. A few days ago, he had tried to produce artificial nitrate with industrial companies and research institutes, but he gave up because of the lack of raw materials for nitrate production.