The Privy Council was ordered to plan to capture Langzhong and take the opportunity to take Hanzhong, but several plans failed to satisfy Zhao Bing. After several discussions, Jiang Jin proposed a suggestion whether it could first take Hanzhong, cut off the enemy's way back, form a situation of closing the door and fighting the dog, and then attacking the enemy in Langzhong. This plan can be said to be very creative, and he asked him to explain it in detail.

The strategy of Jiang Zheng was to first concentrate the troops stationed in Sichuan and Sichuan to Langzhong and attack the city with a strong attitude, attracting the enemy troops stationed in Hanzhong to reinforce Langzhong. On the other hand, he mobilized the inland river naval army to gather north along the Han River in Xiangfan, and then went upstream along the river from the Laohekou of Gucheng to drive straight to Hanzhong.

This plan seems good, but it is thousands of miles apart from Gucheng to Hanzhong. It is impossible for the army to go up the river and go up quietly, and will be blocked by the enemy along the way. However, Zhao Bing has no doubt about the combat effectiveness of the navy. The enemy navy is not an opponent at all. What he is worried about is that there are no boats and ships in some places, and they will be blocked by the enemy layer by layer along the way, so they are trapped in the middle of the journey.

Hanzhong is actually just one of the largest basins in the northwest region, but its geographical location is very important. It is connected to Guanzhong in the north, Bashu in the south, Jingchu in the east, and Neilong in the west. Its special geographical location has created Hanzhong's important military strategic position in history. Therefore, Zhao Bing in Hanzhong is obsessed with. This place is a strategic location for the current Song Dynasty. It not only protects the security of Sichuan, but also a base for advancing to Guanzhong to the north.

The terrain that formed Hanzhong status was mainly the Qinling Mountains and the Daba Mountains. The two rows of mountain ranges stood parallel and stretched across the east and west, and the Qinling Mountains were high and dangerous, which was enough to be a barrier to the south of Guanzhong; the Daba Mountains were thick and long, which was enough to be a barrier to the north and south. Several valleys crossed the mountains and became a tunnel for north and south.

There is Wuguan at the eastern end of the Qinling Mountains and Sanguan at the western end. There are three other valley roads that pass through the central part of the Qinling Mountains. As the passage between Hanzhong and Guanzhong, they are Baoxi Road, Tangluo Road, and Ziwu Road. The Qinling Mountains are high and steep, so that each valley road is winding and circling? Deep and steep? It is not conducive to large-scale movement of manpower and material resources, especially the transportation of grain and grass supplies.

From a geographical perspective, it is difficult to advance north from Hanzhong and Qinling Mountains? It is easier to advance south from Daba Mountains. When Xiang Yu was conferred the eighteen princes, he only conferred Bashu to Liu Bang? Maybe it was for this reason. Now the Mongolian Yuan abandoned Sichuan and Shu but refused to ced Hanzhong. It was the same purpose. It is to prevent the Song army from leaving Sichuan and Shu since then? It is to enter the Shaanxi-Gansu region.

It is precisely this special geographical location that the Yangtze River and its tributaries flow into the bottom of the basin in a centripetal shape, flowing out of the rivers and alluvial rivers to form fertile plains?                                                                                                                                                                                                                                   �

After entering the Song Dynasty, Hanzhong has always been the forefront of fighting against foreign invasion. After the Jingkang Incident, the Jin and Song allying in Hanzhong Ningqiang Sanguan along the Qinling Mountains to the Huaihe River. Hanzhong became the frontier of fighting against the invasion of the Jin people. More than 70,000 officers and soldiers were guarding the dangerous situation. Sometimes they covered Sichuan and sometimes supported Xiangfan. Under the leadership of Wu Jie and Wu Lin, not only did they achieve brilliant achievements in the anti-Jin war? but also promoted water conservancy? Developed production, ensured supply, supported the war, and enriched the people.

Secondly, Hanzhong is easy to defend but difficult to attack. If there is a cross-border war between the four-sided military groups, Hanzhong will be the first to be the brunt. At the end of the Three Kingdoms, Sima Zhao of Wei attacked Shu with three armies. It was Deng Ai who attacked Hanzhong, crossed Motianling from Yinping Road to surprise Sichuan, captured Chengdu, and led to the demise of Shu. During the Lizong period of this dynasty, the Mongolian army entered Mianzhou, marched into Taurus, and was repelled. Later, in the second year of Duanping, the Mongolian army attacked Hanzhong from Fengzhou, Lueyang Xichigu, and the commander Zhao Yan led the army and civilians to resist tenaciously for a year. The entire army was killed in battle, and the Mongolian army was able to enter Shu through Hanzhong.

In addition, Hanzhong can be used as a military base for attack as defense. During the Shu Han Dynasty, Zhuge Liang also went to Qishan as a base for Hanzhong, and sent troops to attack Cao Wei five times in succession. Unfortunately, Zhuge Liang was born in Hanzhong for eight years and died before he could win. After his death, the later ruler garrisoned Hanzhong with Jiang Wei as the general of the guard. He still adopted Zhuge Liang's strategy of attack as defense and actively defended. He sent troops to the northern expedition eight times, with both victory and loss, which played an important role in consolidating the Shu Han regime. The Hanzhong people made great contributions to the northern expedition.

Sichuan's return to the Central Dynasty actually started from the Qin Dynasty to establish a county, and it continued until the Song Dynasty was considered assimilation. In this process, the Song court completed the continuous reorganization and division of the administrative regions of Shu, and divided the prefectures and counties in Shu into Yizhou Road, Lizhou Road, Kuizhou Road and Zizhou Road, collectively known as Chuanxia Fourth Road, referred to as Sichuan. Yizhou Road is mainly the Chengdu Plain in western Sichuan, Lizhou Road is the mountainous land in southern and northern Sichuan, Kuizhou Road is the mountainous land in eastern Sichuan, and Zizhou Road is the hilly area in central and southern Sichuan.

It was not until the late Southern Song Dynasty that Sichuan basically formed the six cities of Chengdu, Jiading, Baoning, Chongqing, Zunyi and Hanzhong. Chengdu was the center of the plains among the hills in western Sichuan. Jiading was the channel of Yunnan and Sichuan and the intersection of the three rivers in the Minjiang River, Qingyi River and Dadu River. Baoning was the center of shipping in northern Sichuan and the Jialing River, and Chongqing was the hub of shipping in the Yangtze River and Jialing River.

In the northwest direction, the Western Han River Valley Lower provides a relatively flat channel from Hanzhong to Longxi. In the southeast direction, the Han River connects Hanzhong and Hubei, and Hanzhong is in its upper reaches, forming the transportation line between the northwest and southwest and central and southern regions. Hanzhong coincides with the end of the Jiangnan-Wuchang-Han River and Guangzhou-Chongqing-Jialing River transportation line.

In the eastern tributaries with abundant water volume, the capillaries in the mountainous areas can be formed. Hanzhong can maintain communication with Xing'an, Yunyang, Xiangyang, De'an and Ezhou through the Han River; in the south, after centuries of military transformation, the waterway from Lueyang to Chongqing has been connected. Jiang Zheng proposed the idea of ​​attacking Hanzhong from the Han River to the Han River to attack Hanzhong. This is also based on this, and there were successful cases of Qin's success in the Han River from Hanzhong to attack Chu, Ying and Yan...

After several considerations, Zhao Bing agreed with Jiang Jin's idea in principle, and then convened a court discussion to receive support from all ministers and decided on a step-by-step plan.

First of all, for the "Langzhong Incident", we must issue a severe condemnation and send envoys to question the Mongol Yuan, especially to open our mouths and open the price high. We must demand that the main culprits who create conflicts be executed, the collaborators be held accountable, and huge compensation for the casualties. The purpose is to argue with the Mongol Yuan and buy one to two months for military preparations.

While the Mongolian and Yuan dynasties were negotiating, Liu Shiyong was ordered to mobilize the army and attack Langzhong. On the one hand, it was to attract the enemy garrisons from Hanzhong to reinforce Langzhong; on the other hand, it was also to prepare for the actual combat. At the same time, Tian Zhong, the governor of Xiangfan, used various forces to conduct reconnaissance on the upper reaches of the Han River in Gucheng, to find out the flow of the river, whether the warships and enemy forces along the river could be deployed and the river defense forces, and to secretly mobilize and pre-war training for the troops.

At the same time, Zhao Bing ordered the Yangtze River Inland Water Army stationed in Jiankang, Jiangzhou and Ezhou to move to Xiangyang in the name of escorting military supplies, and prepare for the military and materials to attack Hanzhong through the water route. Veteran Liu Zhu asked to command the navy. Zhao Bing knew that the navy had been used to transport troops and restrain and harass the enemy during the Northern Expedition, and did not achieve great results, and wanted to take this opportunity to make contributions to the navy.

Zhao Bing understood Liu Zhu's mood very much as a desire for war in the navy. In the past, in order to defend Qiongzhou, the court always regarded the development of the navy as its primary task. However, as the Mongolian and Yuan navy was annihilated and the war turned to the battle for land, the infantry became the target of priority development. This made the generals of the navy worried that their status would decline and then become vassals of the infantry, so they urgently needed a victory in the water battle to demonstrate their status.

In fact, the concerns of the navy generals were redundant. Zhao Bing knew that as the war against Mongolia deepened inland, the role of the navy was declining. However, he was determined to be above the ocean, not the surrounding near sea. Therefore, the investment in the development of the navy was not decreasing, but increasing. The cost of developing new distant warships every year was calculated in millions of yuan. However, they could not see that far for the time being, but were worried about the absence in the war.

Zhao Bing knew that this battle could not be a big battle, and that when the Mongolian and Yuan naval forces declined to the extreme, large-scale water wars would hardly happen. However, the navy's mission was also very heavy. They not only had to undertake the task of transporting troops and transporting materials, but also had to open up water routes and assist the infantry in siege.

This also requires a general with rich combat experience, strong coordination ability, and proficient in the coordinated combat between the water and invaders. Liu Zhu has been the commander of the navy for more than ten years, so water battles are naturally no problem. He has also experienced several water and land wars that assisted the infantry in attacking Guangzhou, fighting in Quanzhou and entering Jiangnan. In addition, his qualifications in the army are also the old boss of Liu Shiyong, the commander of Sichuan and Sichuan. He is indeed the right candidate to command this battle, so he asked for it.

The plan has been decided, but public opinion is still the first step. The Empire Daily first disclosed the truth about the "Langzhong Incident" and the various newspapers in the capital reprinted it. For a time, the government and the country were excited and demanded a war against the Mongolian Yuan and a Northern Expedition again. Several important officials in the court also expressed on various occasions that they could not tolerate the provocations of the Mongolian Yuan and must pay the price.
Chapter completed!