Zhao Bing, who was open and secret, had finished his explanation, and someone would do it, but he could not be the manager of the hand. After all, he also served as the Privy Councilor. Of course, this cannot be said explicitly, otherwise it would not only make him feel embarrassed, but also easily arouse suspicion between civil and military officials. His operation was also very simple. Since this is the case, I would put aside the dispute. On the grounds that there is no suitable candidate at the moment, this position can only be temporarily vacant.

Therefore, Jiang Jin and Han Zhen, who presided over the daily life of the Privy Council, were also in charge of the heads of the Privy Council, and they had to ask for instructions in everything. He was actually the envoy of the Privy Council. Although he was suspected of stealing the bell, the old people in the court knew what was going on, but His Majesty was unwilling to give up the military power. It was not a day or two that the emperor had been in charge of military power alone. Everyone was used to it, so naturally no one was talking in the court openly.

Of course, there must be people talking about it in private, and Zhao Bing just pretends not to know it. He is shameless and does not move. Attacking Shu has always been an important part of his national defense strategy. He has never entered this inland province in his previous life, but even if he has been there, he would not have thought that he would go to inspect the mountains, rivers and terrain today. In this life, he also has no chance to go, and it is probably difficult to make a journey to attack Bashu in person.

Therefore, Zhao Bing's understanding of Sichuan is only books and videos from his previous life, and this life is the travel notes and information collected by his predecessors' geography and intelligence systems. When he wants to plan the Battle of Langzhong, he must not be unaware of it. At least he must know the general situation and be able to find this place on the map. So he ordered the secretary to sort out the relevant books and picture albums and give them to himself as soon as possible.

It sounds funny. Zhao Bing knew that Langzhong still came from "Romance of the Three Kingdoms". Before the Battle of Baxi County in Shuwei, Cao Cao had already begun to migrate the people of Hanzhong. The general Zhang He, who was under Cao Cao, went south to Baxi County, and planned to migrate the people here, marched into Dangqu, Mengtou, and Dangshi, and had a sharp offensive. At this time, Liu Beigang and Sun Quan ceased the battle to demarcate Xiangshui and hurried back to Jiangzhou. He was unable to support Zhang Fei who was stationed in Langzhong for a short time.

Liu Bei's choice can show the severity of the situation at that time. The reason why he did not choose to go back to Chengdu directly but stationed in Jiangzhou was also left room for mediation. If Zhang Fei could not resist the Cao army with an advantage in Langzhong and let the Cao army attack Shu from Micang Road, Liu Bei could still choose to retreat to Jingzhou, or gather troops in Jiangzhou to fight back and make plans.

There were strong enemies outside and no reinforcements inside. Zhang Fei fully utilized his advantages of guarding Baxi County for a long time. While fighting head-on with Zhang He's army, he personally led elite troops to detour from the narrow mountain road to attack Zhang He. Zhang He, who had always been known for his terrain warfare, lost his throne and fled north to Nanzheng in a panic. After this battle, the Cao army was no longer able to get involved in the south of the Micang Road.

Therefore, Liu Bei realized that Cao's army was short of troops in the western region and entered the strategic defense stage. He then made up his mind to return to Chengdu from Chongqing to accumulate strength, and launched the Battle of Hanzhong the following year, and seized Hanzhong. This shows that Liu Bei sent general Zhang Fei to guard Langzhong, which shows that the location here is very important to the Shu Han regime and can better protect the Shu Han regime.

Although the two eras are thousands of years apart, Zhao Bing thinks that the situation they face is similar.

Let us first look at the strategic layout proposed by Zhuge Liang in "Longzhong Pair". In his layout, after the Liu Bei group pacified the Sichuan Basin, when the world changed, the army left Qinchuan, and went north to Wanluo. Advance could plot against the Central Plains and retreat to protect the basic Shuhan area of ​​the Sichuan Basin. The Langzhong area of ​​Baxi County was the key point to complete this strategy.

From the road from Hanzhong to Shu, except for the rugged and difficult Yinping Road, there are two passages from Hanzhong to Shu, namely the Jinniu Road and the Micang Road. The Jinniu Road is a typical basin channel with danger in front and easy in the future. From Hanzhong westward, through Guangyuan and Jiange, you can directly penetrate the Chengdu Plain after passing through Jianmen Pass. The importance of the past and present is self-evident.

The Micang Road is slightly inferior to the Jinniu Road because the road is rugged and difficult to travel. For a long time, the Micang Road has existed as a backup of the Jinniu Road, while Langzhong is stuck in the throat of the Micang Road. From Hanzhong to Hanzhong, we pass through the Daba Mountains and pass through the Nanjiang River. Although this road is difficult to travel when we arrive in Langzhong, after entering Langzhong, we can use the confluential Jialing River, Baishui River, Xishui River and other water systems, and the plain terrain is rapidly advancing towards Chongqing or Chengdu.

Regarding the importance of Liu Bei's foothold in the Sichuan Basin in the early days, the biggest threat was the Cao army that occupied the Hanzhong area and could move south at any time. Therefore, the importance of guarding Langzhong was no less than guarding Jiange. Let Zhang Fei guard Langzhong, while allowing him to use his military qualities to guard the Micang Road, the location of Langzhong could also monitor the north and east directions, which in turn affected the overall strategy of Liu Bei's army.

Under this circumstance, the Langzhong area was particularly important to the Shu Han. The Langzhong area not only blocked the Mi Cang Road and took into account all directions, but also guided the strategic transfer of Shu Han. The importance can be seen. From the 18th to the 24th year of Jian'an, the focus of the Shu Han group was in the north and planned to Hanzhong. At that time, Zhang Fei played a defensive role here. If the front-line war failed, Shu Han could retreat to the Sichuan Basin.

From the 24th year of Jian'an to the 25th year of Jian'an, due to the Eastern Wu attack on Guan Yu and Jingzhou was lost, Liu Bei sought to go to war with the Eastern Wu. Zhang Fei guarded Langzhong, which was the best position to take into account all parties. It could not only go south to the Jialing River and threaten the hinterland of Jingzhou, but also threaten the weak Wei Yan in the north at any time.

The main purpose of the Song army to seize Sichuan and Shu was to cut off the path of the Mongolian Yuan detour along the Yangtze River and to drive directly to the south of the Yangtze River. In addition, it was to seize a foothold in the Shaanxi-Gansu region. Langzhong area was the hub of Sida. To the north it could serve as a forward base and logistics and logistics storage for Hanzhong and Longzhou, and to the south it could serve as an important pass to block the Mongolian Yuan army's southward advance.

Therefore, although the importance of Langzhong did not decline and was as important as the national destiny during the Shu Han period, it was also an important place to influence the local situation. The Wang family must have understood the importance of Langzhong. If they lose this outpost, the Song army could approach Hanzhong and threaten their place of residence - Longzhou. Therefore, they were reluctant to hand it over to the Song Dynasty, and did not hesitate to go to war with the Song army here against the imperial edict.

The importance of Langzhong area is not only in the Shu Han regime and the present. In later wars, Langzhong connected the junction of Shaanxi and Sichuan, and has always been a battleground for military strategists who are easy to defend and difficult to attack. Judging from the city defense construction in Langzhong area, if the two armies confront each other, occupying the city of Langzhong is very important for both the offensive and defensive sides.

The city in Langzhong is the capital of Baoning Mansion in the Yuan Dynasty. As early as the Warring States Period, Ba State built its capital here. From the map, Baoning Mansion is surrounded by water on three sides and backing on one side, which is easy to defend and difficult to attack. If you attack Baoning Mansion from the south, it will be difficult to expand even if you have a few times the enemy's strength advantage. Moreover, there are fertile fields everywhere across the fields across the river, and even if you want to take a long-term siege, it will be difficult to succeed.

Zhao Bing recorded a war here at the end of the Ming Dynasty. After the Southern Ming regime injected fresh blood into the Western Army, the Yongli court organized a large-scale counterattack in the east and north directions. Li Dingguo was advancing east and restored the land thousands of miles; Liu Wenxiu on the northern line also advanced rapidly and restored the Sichuan Basin. Compared with the Ming army's revival, generals such as Wu Sangui and Li Guohan in the Qing Dynasty did not have such a good life.

Under the fierce offensive of the Ming army Liu Wenxiu, Wu Sangui lost all the prefectures and prefectures in Sichuan except Baoning Mansion, and then retreated in a hurry to defend Baoning Mansion and planned to move to Shaanxi. As a result, Langzhong area ushered in a tragic battle. Considering the terrain factors of Baoning, Liu Wenxiu, who had won battles all the way, chose to give up the steady battle and quickly sought a decisive battle with Wu Sangui.

In terms of terrain, if the Qing army occupied Baoning, Wu Sangui could threaten the hinterland of Sichuan at any time and attack the Ming army stationed in Chongqing and Chengdu. Even for the sake of future management of Sichuan, Baoning Mansion urgently needed to be captured at that time. Furthermore, if the Ming army annihilated Wu Sangui and other troops in Baoning in one fell swoop, the Qing army was originally deployed in Gansu and Shaanxi, and the western defense forces in Sichuan would be empty. The Ming army would reverse the long-term passive beating situation and achieve the strategic goal of "strengthening Shaanxi and Henan".

Facing the Ming army, the opponent was Liu Wenxiu, who was praised by Wu Sangui as "I have never encountered such a strong enemy in my life". The only thing Wu Sangui's army can rely on is the unique terrain and solid city defense of Baoning's city. However, Baoning's unique city construction also made Liu Wenxiu, who was good at military formations, make a serious mistake in military deployment.

Considering that the purpose of Liu Wenxiu's Battle of Baoning was to annihilate the living forces of the Qing army in the western region, when deploying an attack on Baoning Mansion, Liu Wenxiu chose to disperse his troops and occupy strongholds in various parts of Baoning Mansion, and then formed a three-sided encirclement of Wu Sangui's army.

In order to launch an attack on Baoning Mansion City, which is surrounded by rivers on three sides, Liu Wenxiu ordered the troops to build bridges and let the main forces with strong combat power cross the Jialing River first, and then set up formations based on the terrain based on the weak combat power Zhang Xianbi's troops, and sent Zhang Xianbi's younger brother Zhang Xianzhen to guard the floating bridge with his back to prevent the Ming army from being split on both sides of the strait, and the front stretches for dozens of miles.

Such an arrangement also gave Wu Sangui a chance to break through. Wu Sangui led his army to avoid the powerful Liu Wenxiu headquarters and rushed straight to Zhang Xianbi's front. At the same time, Zhang Xianzhen's army was also attacked by the Qing army. Under the impact of Wu Sangui, Zhang Xianbi's army was partially defeated, and Zhang Xianzhen's army was even more panicked and cut off the floating bridge by itself. The chain reaction triggered the collapse of the Ming army. Liu Wenxiu's command system was cut off from the collapsed Ming army and could not rescue in time, resulting in a large number of Ming army cavalry and infantry being driven down from the Jialing River. The defeated Liu Wenxiu could only lead his troops to retreat in disgrace.

Zhao Bing knew very well that if the Langzhong area is used for defense, it would be unfriendly to the army attacking from south to north. Under the terrain, even if a million soldiers are suppressed, it would be difficult to perform. If the encirclement is to be carried out, the arrangement of the army will be severely divided and the defenders will be given the opportunity. How to prevent the Song army from the same mistake is a realistic issue he should consider...
Chapter completed!