Xiongshan people moved, Wanya flew, and then Yao Zheng also rushed to the Henghai Navy to start acting.

When the three of them moved, Liu Xing finally waited for two good news from the grassland that he had been waiting for a long time: according to the strategy, the Zhiyan army had bypassed the three tribes in the western part of the Menggu Kingdom and penetrated to the northwest of the grassland. 200,000 Goryeo soldiers also traveled thousands of miles to the east of Yue Fei's army to assemble, and the leader was actually Wang Kai, the lord of Goryeo.

The lord of Goryeo personally led his troops westward, which Liu Xing did not dare to fully believe in his intentions before. Because Wang Kai's country has always had two very powerful forces that want to usurp his throne.

When the two powerful forces coveted, Wang Kai dared to personally lead his troops to leave the country, which first made Liu Xing see his determination and sincerity to sincerely submit to and re-turn Goryeo into a vassal state of the Central Plains Dynasty.

After learning that Wang Kai personally led the army to the grassland, Liu Xing immediately issued an order, ordering the military intelligence department lurking in Goryeo to spy on the core members of the two forces that coveted the throne, and at the same time ordered Zong Ran, who had just served as the patrol envoy of southern Liao, to transfer 120,000 troops from Hebei and Shandong to the border area between the Great Song Dynasty and Goryeo.

Then Liu Xing publicly promulgated a document and officially warned those who had different intentions and plotted against each other in Goryeo: Wang Kai is the main and Goryeo is always peaceful. Whoever dares to usurp his power, the king will enter the country and swear to destroy his nine clans.

Under such a high-pressure threat of Chiguoguo, those who tried to usurp the throne in Goryeo suddenly broke out in a cold sweat.

However, those guys who did not know whether they were alive or dead did not immediately bow their heads, but stood up one after another and shouted the slogans of "Wang Kai betrays the country and bends his knees to seek glory" and "strong enemies are waiting, and they rise up in public to resist foreign enemies interfering in politics".

It's a pity, it's ridiculous, it's a pity that those conspirators and usurpers in Goryeo have lost their military power before Wang Kai led the troops to go on the expedition, and it's ridiculous that not long after the slogans of those dissidents were shouted, the agents of the Great Song Dynasty Military Intelligence Department who were lurking in Goryeo secretly arrested and arrested them one by one.

If they don't shout slogans, maybe they will still have a chance to hide themselves and not be captured and "summarily executed". As soon as they shouted the slogan, they did the military intelligence agent a great favor, exposing themselves all like unclothed children, and then ending up in a different place.

Groups of opponents of Wang Kai in Goryeo were executed by military intelligence agents, and Liu Xing certainly did not just want to help him stabilize his rear.

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In fact, the method of rolling mines and arranging mine formations is only the simplest tactic of mine tactics created by Liu Xing, and most of the rolling mines used are stone mines and earth mines, which have been far away from the blossom mines and fire mines equipped with the royal army of the Great Song Dynasty in terms of lethality, waterproof ability and stability.

Because the flowering mines and ground fire mines are no longer filled with the old-style black gunpowder that the craftsmen in Zhong Xiangjun's army can master, they are all ******** that can no longer be refined simply from human and animal manure and must be processed and produced by advanced technology.

When the martial arts students were studying in the academy, they first received the old-fashioned rolling mines loaded with black explosives. Speaking of martial arts, the main thing is to use the new double thunder and even the water ghost thunder loaded with ******** as the main utensils for daily learning and training.

Therefore, Liu Xing firmly believes that as long as Wu Beisheng and Xuan Wusheng are allowed to conduct short-term training for soldiers who are good at civil engineering operations in Liangguang, when he orders to go south to destroy Zhong Xiang in the future, his thunder arrays can only stop the Annan soldiers, and they will definitely not be able to stop the Great Song Dynasty......

On land, the soldiers of civil engineering operations were trained, and Liu Xing at sea also made new deployments.

The Heng Navy and the Ning Navy are the two naval divisions with the youngest ship types, the largest number of ships and the most neat staffing of the two ships in the Great Song Dynasty. Among the two sailors, there are also some mill warships that have just been launched and built using the method of land division.

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Although the northern naval division may not have been able to adapt to the hot weather of March in the south, Liu Xing still issued an order for the two naval divisions to select and transfer a total of 120 warships of various types to form a southbound naval division, and handed it over to Yao Zheng as the commander of the southbound naval division to capture Changguo County and the surrounding islands that had been vacated by King Kang.

After conquering Changguo and its surrounding islands, Liu Xing's secret order to Yao Zheng was to cross the strait directly, shell the Penghu Inspection Division, and first strike at King Kang to "knock on the mountain and shock the tiger".

After "knocking on the mountain and shaking the tiger", the southward sailor immediately drove to Qiongzhou Island, because Qiongzhou was the real target of the sailor's southward trip.

As for the overall operational deployment, Liu Xing did not make a comprehensive plan on behalf of Yao Zheng, but only gave him a specific deadline: to capture Changguo for a maximum of ten days, knock on the mountain and Zhenhu to leave only a small number of gunboats, and attack Qiongzhou and send three-quarters of the ships to completely blockade and destroy the ships owned by Cheng Changyu.

When the battle in Qiongzhou began, a quarter of the ships were dispatched to cruise to the sea east of Thang Long Province and look for an opportunity to shell Zhong Xiangjun from the sea.

Of course, if one or two suitable islands can be found in the sea east of Thang Long Province, Yao Zheng can immediately set up a village on the spot and stand by......

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Civil engineering work, this term is new to most generals, but it is not unfamiliar to Wutang and Wubeisheng.

In the lecture hall, the civil engineering subject has become a compulsory subject for all military subjects as early as a year ago, and it has also become an extremely important elective subject in the military academy, and the engineering subject of all military training schools is also listed as a compulsory subject.

What is civil engineering? It is defined as the application of materials, equipment and technical activities such as survey, design, construction, maintenance, and repair, and also refers to the object of engineering construction.

That is, all kinds of engineering facilities built on the ground or underground, on land or in water, directly or indirectly serving human life, production, military and scientific research, such as houses, roads, pipelines, tunnels, bridges, canals, dams, ports, water supply and drainage, and protection projects.

The broadly defined civil engineering operations tend to be more common to both military and civilian use, and there are actually only five major civil engineering operations learned by military equipment and martial arts students, namely, the construction of trenches and barracks, the protection of embankments and canals, the construction of boats and bridges, the construction of artillery arrays, and mine laying and demining.

The reason why Liu Xing ordered Xiongshan and Wan Yafei to select and transfer soldiers who were proficient in civil engineering operations to go to the training camp was to make combat readiness adjustments in response to the "Thunder Shock Lockdown Law" adopted by Zhong Xiang in Annan. (To be continued.) )