Chun Yu Wanyun spoke, stretched out his hand to brush the bangs scattered on his forehead and said: "Toad poison is the most deadly poison that the old body has seen so far, when Ah Mo is able to feed the toad to human brains, it may have added Miao Jiang's blue silkworm poison Gu, peacock gall, crane top red and other toxic and powerful medicinal materials, so that the toad poison has almost no antidote!" ”

Chun Yu Wanyun said and took a deep breath and said, "The old body was dumbfounded when he saw that General Wei was seriously poisoned, because the skin on his body was darkening; There is no choice but to be a dead horse as a live horse doctor, and take out all the hundred poison powders that have been developed for many years and turn them into potions; It was used by General Wei and dozens of poisoned Zhuang customers. Hey! A miracle happened, and the black on General Wei's skin gradually faded to reveal a rare ruddy color; Forty Zhuang Ke, like General Wei, gradually came to life and slowly woke up! ”

After listening to Chun Yu Wanyun's narration, Zheng Shuang shouted "Kou Xiangye"; He said with emotion: "Understand the poison of the toad that the medicine beetle master told me about!" Momo's ability to turn toads into life-threatening poison shows how powerful he is as a monster at the same time! ”

After a pause, he cheered up his spirits and said: "The Liao army is now stronger than the Song army, and the Empress Dowager Xiao hired Amo Ability to be the national teacher; It is not easy to destroy the Song Dynasty! ”

After Zheng Shuang finished saying the above words, he didn't wait for Kou Zhun to say anything, and then said: "Kou Xiangye mentioned earlier that there are three lines of defense in the northern border of the Great Song Dynasty, Xiao Ke will tell you about the strangeness of these three lines of defense now!" ”

Kou Zhun saw that Zheng Shuang was old-fashioned, and he muttered in his heart: This Zheng Shuang's little fart is really a carrot sandwich and has not seen that the affairs of the Great Song Dynasty are more expert than the old man, the prime minister......

Kou Zhun was thinking in his heart that Zheng Shuang had already gushed about the connotation of Song Liao's three lines of defense - the offensive line.

Since the founding of Taizu in the Great Song Dynasty, the sixteen states of Yanyun have become a kind of heart disease; The Song and Liao countries were constantly fighting around the sixteen states of Yanyun, and the grandfather once said: "Shi Jingjiao ceded the sixteen states of Yanyun to the Khitan back then, so that the people there suffered a lot, it is really pitiful, I put the money I usually accumulated into the pile sealing warehouse; After accumulating three or five hundred thousand yuan, I will use it to negotiate peace with the Khitan, and if they are willing to return the land and the people, I will take this money as a ransom; If they don't want to, then I'll use this money to recruit warriors to fight the Khitan! ”

Although the Taizu Dynasty and the Khitan people continued to fight small battles, there were no major battles, and Taizu wanted to use coins and satin silk to buy back the sixteen states of Yanyun from the Khitans; This proposition, while meritorious, is clearly a foolish one.

After Song Taizong ascended the throne, he failed to attack Liao twice, and decided to set up three lines of defense north of Bianliang.

The three lines of defense set up by the Song State in Hebei and Shanxi were the three routes of the Liao army's attack on the Central Plains.

The first route is called the Western Line, also called the Shanhou Yunzhou Line, from Datong to troops through Yanmen Pass, Daizhou to attack Taiyuan; Due to the existence of natural hazards in Yanmen Pass, this line was very favorable to the Song Dynasty; When the invincible general Yang Ye was holding Yanmen Pass, he had defeated the invading Khitan soldiers of the Liao State many times, and the western front was not the focus of the Liao army's attack on the Central Plains.

The second is the Eastern Front. Although this line is located in the hinterland of the plain, it has to pass through the salt and swamp of the Baiyangdian River Basin and Cangzhou Hengshui, which is very unfavorable for the cavalry to gallop; Therefore, it is not the best choice for the Liao army;

The third is the midline. From Zhuozhou to the south, the soldiers pointed to Baozhou and Zhending, that is, the direction of the Beijing-Guangzhou Railway in later generations; This line is the endless Great Plain of North China, which is very conducive to cavalry warfare, so it is also the best choice for the Liao State.

In the 25-year war of Song and Liao, the Liao army either used the middle line as a breakthrough to attack in a big way; Either attack the eastern front and harass the central line at the same time, so the Zhending and Baozhou defense lines became the top priority of the Song army's defense in the Song-Liao War.

In the 25-year war, if the Song Dynasty attacked one side, its target was Youzhou; As the defending side, Liao's tactics are naturally to defend the city and wait for reinforcements.

In fact, except for Song Taizong's first Northern Expedition, which was a surprise to the Liao State, and the troops came to the city of Youzhou, and was finally defeated by the Liao reinforcements at the Gaoliang River; The rest of the military operations were overturned by the Liao army without even seeing the city wall of Youzhou.

If we talk about it from the campaign level, taking the Yongxi Northern Expedition as an example, the Song army sent troops on three routes; And achieved considerable results on the Western Front, but the tactics of the Liao army were extremely simple; In any case, your Song army must take Youzhou, so just defeat the main force of Song before Youzhou is captured; At that time, no matter how many cities you take, as long as Youzhou is not broken, you will have to spit it out.

If you take 10,000 steps back, the Liao State will lose even in the field; But it is not a problem to hold on for a while with the sturdiness of Youzhou.

With the Song army's mobility and supply ability, it is difficult to say that it was possible to cut off the supply lines of the city before it was captured.

Zheng Shuang said calmly and calmly: "The supply of the Song army is carried by the people with their shoulders, and the cart is expensive and fragile to push; Cutting off the supply of the Song army was a tactic often used by the Liao army in warfare; The supply of the Liao cavalry is much simpler, and one soldier and 5 horses have to solve the problem by themselves; The snatching of grain and grass in a place is called 'threshing grass', and the Song army and the Liao army are not on the same level at all! ”

Qin Shi Huang very much agreed with Zheng Shuang's views and expositions on the three lines of defense and offensive lines of the Song and Liao armies; interjected: "Zheng Shuang, you are now the marshal of the Iron Falcon Army, and Lao Ying sees that you are the best candidate for you to make you the generalissimo of the Great Song State and the Liao Army!" ”

After a pause, he said excitedly: "Lao Ying hated and loved the Song Dynasty when he lived in Qinling, and the dignified Central Plains Dynasty has always been bullied by Yidi; When the Khitan Li Jinzhong harassed the Tang border, the female emperor Wu Zetian changed his name Li Jinzhong to Li Jinzhong; If it really perishes, if Zheng Shuang becomes the generalissimo of the Song army's expedition to Liao; That Liao woman named Xiao Yanyan must not be an opponent! ”

Zheng Shuang clasped his fists with both hands and replied to Qin Shi Huang and said, "The seniors are holding up the little ones!" Xiao Ke is just improvised, and it doesn't matter whether he is the generalissimo of the Song army and Liao; But there is confidence in relieving Song Ting's current danger of tired eggs! ”

Zheng Shuang said, and then the topic of the three lines of defense - the offensive line continued.

We should see that even if the Song Dynasty had a slight advantage in strength and was able to take the offensive; At the strategic level, it still appeared passive, and the transition to strategic defense after the failure of the Yongxi Northern Expedition was formulated according to the three offensive lines of the Liao army, and it was undoubtedly constrained by the Khitans everywhere.

Youzhou was the rear base of the Liao State, and the Liao army was accustomed to use Youzhou as the center to attack Baozhou, Zhending, and Daimyo of the Song State, and even approached Tokyo on the north bank of the Yellow River.

This shows that it is difficult for the Song army to organize an effective defense to restrict the activities of the Liao army in the North China Plain, and can only use strategic depth to harass the enemy's rear when the strength is not superior; Mobility, supply lines, and unique terrain conditions, these three points are the death hole of the Song army.

The importance of the land of Youzhou Liao people have long been well known, and the Empress Dowager Xiao is different from the emperor of the Song Dynasty in that she will go to the front line in person and retreat with the troops in every battle; Can the emperor of the Great Song do this?

In short, the Central Plains Dynasty had to retreat from Youzhou to protect itself, and it could enter and exit the plug; The Northern Dynasty has Youzhou, which can maintain a strong psychological deterrent to the Central Plains Dynasty.

But when it comes to the formation of the Song-Liao confrontation situation, it is not so much because of the ownership of the Land of Hidden Clouds, but because of the balance of strength between the two sides; The Liao were able to ensure that enough troops were put into the Youzhou front line and had a high victory rate in field battles, which was their strength.

Of course, the Song army was not useless, and the Song State was able to guarantee the quality and supplies of the northern army; And has a good record in defense, which is a manifestation of the spirit of the soldiers and loyal to the country.

Therefore, the confrontation between Song and Liao is basically that whoever attacks suffers; The success or failure of a battle will not affect the balance of strength between the two sides, which has an element of geographical advantage, but being able to use geographical advantage to transform it into a part of the founding of the country is also a sign of strength......

Zheng Shuangyang elaborated on Wan's own views on the three lines of defense and three lines of attack on the border, and said solemnly: "Xiao Ke has said so much, does Kou Xiangye still insist on your view of the three lines of defense?" ”

Kou Zhun was speechless, and Chun Yu Wanyun interjected: "Brother Zheng, these points of view are best expounded in front of Zhenzong Zhao Heng, now let's think about the current matter!" ”

Zheng Shuang was stunned, looked at Chun Yu Wanyun and said, "Shitai means ......"

Chun Yu Wanyun fixed his mind and said: "There are 5 things to be taken seriously at the moment, one is that Kou Xiangye pretended to be sick and deceived the emperor, the second is to kill Zhang Yao, the small leader of the forbidden army, and Wang Qinruo's Ding Fukang, the third is that the Iron Falcon Army entered the capital, the fourth is the Liao State spies, and the fifth is that Zhao Heng still summons Kou Xiangye at night......