Lei Shaoxuan spread out a map, spread it on his desk, and officially started his first job as a decision-making staff officer - to explain the preliminary strategic plan of the Northern Wei Southern Expedition to the King of Wei.

"South Vietnam has been established for more than 200 years, peace has been a long time, the army is negligent in training, political corruption, the king of Vietnam is old and sick, ignores political affairs, various forces in the country compete for power and profit, internal friction is extremely serious, the people live in hardship, and people's hearts are fluctuating, it is a good time for the southern expedition. Lei Shaoxuan said.

"In the southern expedition, first consider the comparison of troops. Lei Shaoxuan said, "Our army is mainly infantry and cavalry, with 1.5 million field infantry, 200,000 cavalry, 3.6 million local troops, and 300,000 naval divisions; South Vietnam has only 500,000 infantry, 100,000 cavalry, 1.2 million local troops, and 800,000 naval troops. Compared with the two armies, our army has an absolute advantage in the total strength of the army, and the plan for the southern expedition is strategically feasible. ”

Lei Shaoxuan paused for a moment, and then said: "In recent years, China's domestic wind and rain have been smooth, the economy has prospered, the annual tax revenue has stabilized at more than 515 million taels of silver, and the expenditure is more than 495 million taels, and the war expenditure is expected to be 76 million taels per year. If our army can conquer South Vietnam within five years, its national strength will be fully able to support it; if the war lasts for more than five years, the domestic economy will fall into a difficult situation; and after eight years of war, the domestic situation will become very dangerous. ”

War, both the conquered and the vanquished, will come at a great cost and is never a good option.

Judging from Lei Shaoxuan's experience on the road to the bitter sea, the so-called smooth weather and economic prosperity on the surface cover up how difficult the livelihood of the people in the Northern Wei Dynasty was.

However, these problems are by no means something that Lei Shaoxuan can change.

The southern expedition has been the wish of the King of Wei and the first emperor for many years, and has been preparing for countless years of manpower, material and financial resources, and now the chariot has begun to gallop, and a small ant, trying to block a Mercedes-Benz chariot, is undoubtedly very stupid and must be crushed.

"Most of the territory of South Vietnam is plains, there is no danger to defend, and it confronts our army with the Heng River. The first step in the southern expedition was to cross the Heng River. However, compared with South Vietnam, our naval division was in an absolutely weak position. Fortunately, the naval forces could not go ashore to fight, so although the South Vietnamese naval forces had superior strength, they were more than defensive, and the counteroffensive was insufficient, so the South Vietnamese naval divisions were not worried. ”

"Our army's naval division is insufficient, so the infantry and cavalry cannot cross the river from the river, so they can only choose the Eagle Cliff Pass in the upper reaches of the Heng River to enter South Vietnam. ”

King Wei nodded.

If it weren't for the Henghe natural insurance, the Northern Wei Dynasty would have taken South Vietnam long ago. The South Vietnamese army was negligent in training, but the navy was very strong and could crush the Northern Wei naval division.

The water surface of the Heng River is several miles wide and the waves are turbulent, and it is impossible to cross the river without powerful warships and sailors. It can be said that the national strength of South Vietnam is weak, but it can be peaceful for a hundred years, relying on the powerful sailors and the natural danger of the Henghe River.

The upper reaches of the Henghe River are the Tianduan Mountains that stretch for thousands of miles, the terrain is steep, the canyon is deep, and the rapids and rapids are everywhere.

Eagle Cliff Pass is a male pass in the upper canyon of the Heng River, the only land passage for South Vietnam and Northern Wei Dynasty, and the Eagle Cliff Pass must be taken by the Southern Expedition.

The terrain of Eagle Cliff Pass is dangerous, both ends are steep mountain cliff stone peaks, can not climb, Eagle Cliff Pass is like a knife edge, the gate breaks the middle of the canyon.

The Eagle Cliff Pass is 100 zhang high, towering and majestic, the city wall is built by huge stones, and each huge stone weighs a thousand catties. It is related to the safety of the country, so South Vietnam poured the strength of the whole country to build, and strengthened every year, as the world's first male pass, and it is difficult for birds to cross.

There are ancient poems:

Eagle Cliff Pass, it is difficult to go to the blue sky, the autumn geese fly south and are sad and broken, and the ape sighs and cannot climb; how precipitous it is to reach the sky from the ground, and the top of the sky is broken in the south, and it is 96,000 years old, and it is not populated with the Northern Wei Dynasty.

Eagle Cliff Pass is steep, easy to defend and difficult to attack, referred to as hundreds of years, and has never been breached.

King Wei stared coldly at Lei Shaoxuan's explanation.

"The terrain in front of Eagle Cliff Pass is open, and the troops can be deployed, and the General Staff Department plans to mobilize all the trebuchets of our army, a total of 120 planes, to bombard Eagle Cliff Pass day and night......"

"The Eagle Cliff Pass is a hundred feet high, and the trebuchet can throw boulders into the pass?" King Wei frowned.

"No, you can't. Lei Shaoxuan replied.

"What's the use of throwing stones day and night?"

The Eagle Cliff Pass is as high as a hundred zhang, and no matter how powerful the trebuchet is, it is impossible to throw the boulder into the pass, but the stone is too small, even if it can be put into the pass, the effect is not great.

"The General Staff Department has learned from the experience of attacking the Eagle Cliff Pass over the years, and at the same time summed up the offensive and defensive examples of various famous passes on the mainland, and believes that by concentrating all the trebuchets of our army and bombarding the wall of the Eagle Cliff Pass head-on day and night, the frontal wall of the Eagle Cliff Pass can be blown down within three years. ”

King Wei was surprised: "Three years! There are three years, and the whole army can transport soil and fill up the Eagle Cliff Pass, so why bother to bombard the wall? Bombarding day and night, it is estimated that the stones thrown alone can also fill the Eagle Cliff Pass!"

"Eagle Cliff Pass is surrounded by stone mountains, and it is difficult to take soil. After calculation, if you rely on the soil to fill the city, it will take millions of people to transport the soil for more than ten years, before it can fill in a hundred feet high, let alone take stones; however, the front of the Eagle Cliff Pass is a slope, and the boulders that bombard the Eagle Cliff Pass are thrown, and after hitting the city wall, they can roll back along the slope, and the stones can be recycled. ”

This was the fundamental starting point for considering the use of trebuchets to bombard the city walls day and night, taking advantage of the sloped terrain. It can be said that in order to formulate this operational plan, the General Staff Division has examined countless times and reached conclusions, which are very feasible.

"Hundreds of thousands of troops, stationed outside the Eagle Cliff Pass for three years, watching more than a hundred trebuchets bombard the city wall day and night, doing nothing, wasting food, it is really uncomfortable. King Wei sighed, "What else can be done?"

"The Eagle Cliff Pass has never been breached," Lin Yufei added, "and this is the only feasible strategy that can be thought of." ”

The Eagle Cliff level is stuck between the stone peak canyons, unable to fire attack, unable to outflank, unable to excavate, unable to climb, there are almost no flaws, unless the entire front wall of Eagle Cliff Pass is destroyed, it is impossible to storm at all.

Although the national strength of South Vietnam is weak, it is precisely by virtue of the Henghe Water Division and the Eagle Cliff Pass that it has been in peace for more than 200 years.

It can be said that the Eagle Cliff Pass is the national iron gate of South Vietnam, and when this gate is opened, South Vietnam will no longer be in danger, like a naked girl, waiting for the arrival of the Northern Wei Dynasty.

The conquest of a country has always been a huge cost, otherwise the Western Continent will not be divided, there has been no reunification so far, and the conquest of Eagle Cliff Pass is only the first step of a huge price, although it is difficult, it can only be won.

King Wei took a deep breath, nodded and said, "Go on." ”

"Taking Eagle Cliff Pass is just the first step. Lei Shaoxuan pointed to the map and said, "Because the Eagle Cliff Pass is far away, the road is narrow, and it is very difficult to replenish, so after our army enters the pass, the second step is to outflank the nearest South Vietnamese town, Lengshuitan, and seize the supplementary base of the South Vietnamese Naval Division." Without grain and grass, the South Vietnamese naval division will be chaotic without a fight, so as to open up the Henghe waterway, so as to ensure the food and grass and backup of our army. ”

"The third step is to quickly annihilate all enemy forces within 300 miles south of the Heng River, consolidate the occupied territory, and use it as a base for our army. ”

Lei Shaoxuan looked up at King Wei and said: "Although the national strength of South Vietnam is weak, but the country has been established for a hundred years and has a deep foundation, relying on military force to conquer by force, which will prompt all kinds of forces in South Vietnam to unite and unite with the outside world, so that our army will fall into an isolated and helpless place, and thus fall into the quagmire of war." Slowly drawing it is the best policy. ”

"It is estimated that the entire southern expedition plan will take eight to ten years. Lei Shaoxuan added, "The premise is that Dongqi and Wu Guo are involved." The first and second steps of the southern expedition were only carried out within 300 miles south of the border because the scope of the war was small, and if the pace of the war could be stopped in time, our country would be strong, and the Eastern Qi and Wu would never dare to participate. However, once the war expands to the entire territory of South Vietnam, the Eastern Qi and Wu States will not sit idly by and watch us invade and occupy the whole of South Vietnam, but will also come in and get a piece of the pie, and there is a danger of a head-on conflict. ”

"It takes eight years to conquer South Vietnam, and it takes three years to attack an Eagle Cliff Pass, and the key to the southern expedition is Eagle Cliff Pass. King Wei smiled slightly wryly.

King Wei looked at the map and fell into deep thought.

The plan for the southern expedition has been prepared for many years, and various plans have been deduced countless times, and the entire plan of the General Staff Department is just a formal document.

Lin Yufei and Lei Shaoxuan were silent.

Although the plan is highly feasible, there are many variables, and war is always a very dangerous thing.

If the southern expedition is successful, the natural national strength of the Northern Wei Dynasty will increase greatly, laying the foundation for unifying the world, but if the time drags on too long and falls into the quagmire, it will be difficult to get out at that time, and the Northern Wei Dynasty will fall into a very dangerous situation.

Dongqi and Wu are not fuel-efficient lamps, so they will inevitably take the opportunity to rush up and take a bite.

To a certain extent, there is an element of gambling in the Southern Expedition, but the winning side of the gambling is higher, but it is not a sure win or loss, and it is not impossible to lose the whole country if you are unlucky.

"Eagle Cliff Pass ......," King Wei muttered. Raising his head, he caught a glimpse of Lei Shaoxuan looking around, feeling very fresh in the study, and couldn't help but be a little funny.

Probably because of the first time I entered King Wei's study, young people's curiosity is always very heavy, King Wei sighed a little, he is old, and he really envies young people in his heart.

"Pour tea, bring each of them a cup. Sit down, too. ”

King Wei took a deep breath, put aside his worries for the time being, and smiled at Lei Shaoxuan: "Don't peek, there is nothing here except books." ”

Lei Shaoxuan's face was slightly red for a moment, and he suddenly felt uncomfortable, his throat was astringent for a while, and he took the tea and drank it all in one gulp, forgetting the etiquette in front of the king, which made Lin Yufei roll his eyes.

"There are no rules at all. Lin Yufei said, took a sip, and slowly put it down.

"Okay!" King Wei laughed and said with emotion: "It's good to be young." When this king was the same age as him, wasn't he unruly, staring at the sky, and feeling that the world was in his hands? ”

"What's so difficult about Eagle Cliff Pass?" Lei Shaoxuan blurted out.

As soon as these words came out, I was stunned, and I thought to myself, it's not good, I'm too reckless!

Sure enough, Lin Yufei's face sank.

King Wei shook his head, as if he didn't like it, and his original good impression of Lei Shaoxuan suddenly became extremely bad.

In such a major battle, as a decision-making staff officer of the General Staff Division, it is really not appropriate to speak so recklessly.

"Go back first and prepare for the court. "King Wei said, it's inconvenient to say anything.

Lin Yufei led Lei Shaoxuan out of the south study, walked through the courtyard gate, and walked outside the palace.

Along the way, Lin Yufei reprimanded: "The king doesn't ask, don't say much, such a simple rule, haven't you been trained? Eagle Cliff Pass is not difficult? Are you wiser than King Wei? Wiser than all the colleagues in the General Staff Department?......

Lei Shaoxuan also felt a little remorse in his heart, and was about to explain, but he heard a shrill voice from behind.

"Staff Officer Lei, please stay, the Queen Mother is invited. A little eunuch shouted to Lei Shaoxuan behind him.

"Go ahead!" Lin Yufei said angrily and left. Lei Shaoxuan was speechless in front of King Wei, and his face also felt dull.