(Thanks to the fishing boat for evening singing, and the monthly ticket support of the two children's shoes on the Yongle River, thank you.)

Everything was as Chen Kefu predicted. Song Jingang and Zhen Zhai'er led their troops and horses, and the people of the two counties of Mayi walked long and asked their families to take their own hands, burned villages and cities along the way, filled water wells, and polluted rivers. Only about half of the team had entered Yanmen Pass, and most of the remaining were still outside the pass. Qin Qiong, who was ordered by Chen Kefu to lead a light cavalry to the Dingxiang grassland area to reconnaissance, had already sent back the special letter of Feiying Jiaqing.

The troops commanded by the Turkic Khan, Ye Hu, had crossed the grassland border, and a vanguard cavalry had entered Dingxiang County. The vanguard troops had occupied Dali County, which was an empty city at this time. After receiving the warning, the generals gathered in Yanmen Pass understood that the Turks' going south was indeed obvious.

Dali County is the only city in Dingxiang County. In the early years of Daye, Dingxiang was as the border between the Great Sui Dynasty and the Eastern Turks, with few people. After the Eastern Turkish Shibi Khan at the end of Daye, Dingxiang became even more desolate. By now, Dingxiang has basically become an unmanned area between the Central Plains and the grassland. But although Dingxiang is like a huge unmanned area, Dingxiang has always been a territory of the Central Plains. Now that the Turkic cavalry suddenly invaded Dali County, the meaning of this is self-evident.

When the Turks invaded Dali County, the next step would be Mayi City, and the next step would be Yanmen Pass. Chen Kefu knew that time was urgent and led the generals to the city to check the city defense. After many days of preparation, the news that Chen Kefu was coming to Yanmen Pass had not yet been revealed. The court's troops were mobilized one after another. Now 80,000 powerful soldiers have gathered under Yanmen Pass. In addition, there are 50,000 local village soldiers and 50,000 militia groups urgently convened by Hedong to defend the city and fight, and the defense side has a natural advantage. Even those rural soldiers who are not well-equipped and are not elite enough, the militia groups can still play a huge role.

Standing on the wall of Yanmen Pass that was re-heightened and reinforced, Chen Kefu looked at the cannons on the city covered with red cloaks, and felt emotion. For hundreds of years, the biggest troubles of the Central Plains dynasty have always come from the grasslands, and the nomadic peoples' aggressiveness towards the farming people in the Central Plains will never be changed. Yang Guang was also a very sensible king at that time, but he was severely injured by the grassland people under Yanmen Pass. Finally, he returned depressed.

Now, after only a few years, the Turks have been invading again. And compared to the last time, this time, the Tongye Hu Khan came, which was an unprecedentedly powerful grassland leader who basically unified the entire Turkic Khanate. At that time, an Eastern Turkic attack almost captured Yang Guang. Now, the first attack after the East and West Turks was unified, Chen Kefu understood how much pressure he was.

It’s not that there were ministers who advised him to avoid the Turkic people’s edge. Many people, like Li Jing, even proposed to marry the Turkic people like the Han Dynasty, and then use a slow-moving plan to fight with the Turkic people until they unify the Central Plains in the future.

Chen Kefu thought for a long time, but in the end he refused to avoid it. The current Tongye Hu Khan is probably more energetic and confident than Shibi Khan at the time. The concession at this time will only be considered by him as weak and bullied.

Looking at the endless peaks of Gouzhu Mountain, Chen Kefu sighed, "The situation in Hedong is the most complete. When Guanzhong is outside, I must go to Hedong. If it is said to it east, it is the barrier of Taixing, and the west is the Great River, and the Yin Mountain is the outer edge, and Gouzhu, Yanmen is the inner edge. In the south, it is the Shouyang, the bottom pillar, the city, the Wangwu mountains are the riverside and the river is staggered, and the south is Mengjin, and Tongguan are all my gates. Fen, the lingering flows on the right, Zhang and Qin are enclosing on the left, then the original celestial can be infused and the grain can be transported. Moreover, Yue is facing Jin and Longmen, and then Jingwei can be broken and down; if you go out of the courtyard, go down Huguan, Handan, Jingxing and east, can't you just go? Therefore, the situation in the world must be taken from Hedong."

Li Jing nodded and said, "What Your Majesty said is that Hedong is the hub of the entire north. This status of Hedong is due to its high terrain overlooking the three sides between Guanzhong, Henan and Hebei. Outside Hedong there are Taihang Mountain, Luliang Mountain, Wangwu Mountain, Xicheng City, Zhongtiao Mountain, etc., which form its outer barrier, and to the west, the Yellow River is surrounded by the Yellow River; Inside are Hengshan, Wutai Mountain, Guancen Mountain, Yizhou Mountain, Taiyue Mountain, Yunzhong Mountain, Huo Mountain, Jiwang Mountain and other mountains are distributed intertwined, forming the inner circle of danger; Fen River, Zhang River, Hutuo River, Sanggan River and other rivers flow in different directions. The rivers alluvial between the mountains, forming a series of pearl-shaped basins."

"The Eight Passes of Taihang are important passages between Hedong and Hebei and Henan. In the west of Hedong, there are Guancen Mountain, Luliang Mountain and other mountains, and in the southwest there is the Yellow River Ferry Crossing Pujin, which is the only way to travel between Hedong and Guanzhong. The mountain and river situation in Hedong has made Hedong a very favorable position in the inner line combat. The situation is favorable and can attack from three sides, and if it is unfavorable, you can defend it by risk. The situation in Hedong is so powerful that the mountains and rivers are not only the most important pass for us to prevent the grassland tribes, but also the most important breakthrough for the grassland tribes to move south."

The old general Wang Rengong had been in control of Hedong for a long time, and he was very familiar with every grass and tree in Hedong. At this time, he said with concern: "The Turks understood the importance of Hedong and sent troops to invade Hedong. The old minister thought that Your Majesty retreated to Yanmen and defended according to the pass. Although the defense and counterattack strategy was stable, there were still some places that we had to consider in advance. Although we were able to defend Yanmen, we could prevent the Turks from continuing to move south and prevent the Turks from taking the opportunity to attack Luoyang, the capital. However, in this way, we completely gave up the two counties of Mayi and Dingxiang outside Yanmen. Dingxiang was originally remote, and giving up was not very important. However, there were Yunnei, Shenwu, Shanyang, Mayi, Heng'an and other important towns, as well as dangerous passes such as the Great Wall. I was afraid that I would give the Turks more convenience to go south."

"And Yunnei Town has always been a military town, located between Guancen Mountain, Hengshan Mountain and the south side of the grassland. The low entrance to the north mountain provides a convenient passage for the influx of Turks; the Sanggan River originates from Guancen Mountain, passes through Yunnei and Heng'an basin and flows into Hebei. In this way, once the Turkish cavalry enters Yunnei, they can enter Hebei east along the low land of the Sanggan River valley, directly in front of Jundu Pass; they can also cross the Taihang Mountain from Feihukou and detour to the southwest side of Beijing.

As the capital of the Great Chen capital, Beijing may be invaded by the Turks at any time. At the beginning of the Western Han Dynasty, Maodun Shanyu led the Hun army to influx, besieging Emperor Gaozu Liu Bang in Pingcheng Baideng Mountain, which is now Baideng Mountain in Yunnei Heng'an Town. Your Majesty, the old minister thinks that it is the best strategy to seize Yanmen and defend. But he cannot easily give up the towns of Mayi, Shenwu, Yunnei, Heng'an. The old minister is incompetent and is willing to ask for orders to lead troops to the towns of Mayi, and resist the Turkic cavalry to the south according to the city."

Wang Rengong said it very sincerely. Chen Kefu certainly understood what he meant. The real cutting-edge pass between Hedong and the grassland people should indeed be in Mayi Towns, and Yanmen was just the last pass where the grassland cavalry poured into the heart of the Central Plains.

In fact, as Wang Rengong said, the Dingxiang area is actually just an unmanned isolation zone between the Central Plains and the grassland people. There have been few people living there since ancient times. Mayi is the real border. Since the Han Dynasty, the Xiongnu, Xianbei, Rouran, and today's Turks have all invaded the basins of Yunnei area several times to invade Hedong or Hebei.

Chen Kefu, who is familiar with history, knew very well that in the early Western Han Dynasty, Maodun Shanyu led the Hun army to influx, besieging Emperor Gaozu Liu Bang in Pingcheng Baideng Mountain. At the beginning of the Han Dynasty, he carried out rest and recuperation, and implemented strategic defense against the Huns in the north. He once stationed troops here. He connected to Yuyang in the east, Shanggu, Yunzhong in the west, Wuyuan, and protected the north.

The Eastern Han Dynasty declined, and the land of Daibei gradually became deserted. Nomadic peoples outside the border flocked into the Datong Basin and penetrated into Hedong. During the "Yongjia Rebellion", Liu Kun, the governor of Bingzhou of the Western Jin Dynasty, invited troops to fight against the Xiongnu Liu Yuan, to fight against the Xiongnu Liu Yuan. Tuoba Yilu was named the King of Dai for his merits. Tuoba Yilu's posthumously seeking the land of Daibei and built the capital in Pingcheng. Tuoba's tribe became increasingly powerful because of this. During the Sixteen Kingdoms, although the Dai Kingdom established by the Tuoba tribe was once destroyed by the Former Qin, after the collapse of the Former Qin, Tuoba Gui quickly restored the country and established the Northern Wei. The Northern Wei established the capital Pingcheng, based on the Debei North, destroyed the Later Yan in Hebei, the Northern Yan in Liaodong, the Helianxia in Guanzhong in the west, the Northern Liang in Hexi, the Northern Liang in Hexi, and the north swept the Rouran in the north, and the Liu Song in the south, and unified the north.

Since then, the Turks dominated the north, and the Turks have repeatedly invaded here. Northern Qi, Northern Zhou, Sui and the current Great Chen are all deeply affected, and the defense pressure in the north is very high.

Chen Kefu now plans to give up the Daibei Mayi front line and gather troops to defend Yanmen Pass, the leader of the nine passes in the world. This plan is indeed a wise move. But in this way, it is equivalent to giving up the Daibei Mayi front line, and the Turks can directly approach Yanmen Pass without any effort. As the old commander, Wang Rengong naturally saw the benefits of such arrangements to the Turks. They would have no worries and go straight to Yanmen.

He proposed to lead troops to defend the towns of Mayi and resist step by step. In fact, it was indeed a good military strategy. On the one hand, it could delay the Turkish iron hoofs' pace of going south and give the imperial court more time to mobilize troops. On the other hand, it could also consume the Turkish soldiers and retreat step by step, forming a huge staging defense from Mayi to Yanmen, winning more depth for the defenders. Even Wang Rengong could continue to stay in the Daibei area after the fall of Zhucheng in Mayi, threatening the Turks' logistics supply line and threatening their retreat.

This is a very good proposal, but it is also a very dangerous proposal. Yanmen now has limited troops. Even if Chen Kefuzhen gives Wang Rengong 30,000 to 50,000 troops, he can still go out of the pass alone and face the hundreds of thousands of Iron Cavalry of the Turks, they still have a life-threatening possibility.

Looking at the old general Wang Rengong with gray hair, he couldn't help but be moved by his courage as a soldier. He knew that the future was difficult and he was still fearful. This was the real trend of brave generals. Chen Kefu stepped forward and hugged Wang Rengong heavily, and said gratefully: "I give the old general 50,000 light cavalry, but I don't want Wang Shang to occupy Mayi, Yunnei and other cities to defend. You only need to guerrillas in Daibei. As long as you stay in Daibei, even if the Turks go south, they will have to leave a lot of troops to deal with you and dare not go south with all their strength. As long as the old general restrains some of the Turks' troops behind and attacks them once or twice at the right time, I believe that this is the best result."

When Wang Rengong heard Chen Kefu's confession, he understood that the emperor was worried about the safety of his soldiers and turned the city to resist guerrilla warfare. The effect of this was much worse against the Turks, but the soldiers avoided the death of the emperor. At this moment, facing the emperor's concern, he felt more and more that he was shouldering the heavy responsibility of this trip.

ps: Muzi, I'm back. I was sick some time ago and the tragic update was interrupted for several days. Today I started to resume updates, sorry!

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