Liyang Cang is bordered by the Yongji Canal in the west and the Yellow River in the east, so the water transportation is very convenient.

Xu Shiyun once said to Li Mi: "The world is in turmoil, and it is a famine." Today, it is more Liyang Cang, and there are great things. Later, Xu Shiji owned Liyang Cang, "Open a warehouse and eat the people." In the middle of the day, there were more than 200,000 victorious soldiers. ”

Yongji Canal is another important canal dug after Emperor Yang of Sui opened Ji Canal and Hangou, which is the main channel for the Sui Dynasty to transfer grain in Hebei Province, and is also a transportation line for transporting personnel and war materials when using troops to the north.

Yongji Canal is supervised by Shibao County Gong Yan Bi (Yan Lide, Yan Liben's biological father) is responsible for the construction, the south leads Qinshui to the Yellow River, and the north leads to Zhuo County, with a total length of more than 2,000 miles. At that time, there was a shortage of men, and women were forced to serve, and it took less than a year from construction to completion.

The Yongji Canal is based on the old white ditch of Cao Wei, and expands the channel into a large canal, although its width is not as wide as the Tongji Canal, but the transportation capacity is very strong, and it can sail a huge dragon boat.

Yongji Canal, April.

In the early spring, the Yongji Canal broke the ice early, and the spring breeze stirred the turbulent river to roll with white flowers. Xu Shiji's Wei army and the army of the Sui Dynasty have turned this radius of fifty miles, have become a huge camp, if you look down from the nine heavens, you will find that the Sui army camp is obviously stronger than Xu Shiji's Wei army camp, compared to the Wei army's simple cloth and cloth armor, the Sui army can be called a torrent of steel, that pair of shiny armor, in the spring light, reflecting the dazzling strong light.

The commander of the Sui army, Lai Hu'er, was patrolling the various military camps back and forth surrounded by a group of generals and soldiers, and he only gave the commanders of each military camp one task - that is, how to fly across the Tongji Canal and storm the Wei army camp across the river!

A thin official dressed in a purple civil official robe and wearing a virtuous official on his head stood out among the sergeants in military uniform. At this moment, he was frowning, and the sound of gurgling water kept getting into his ears, staring at the Yongji Canal in front of him, without saying a word.

Lai Hu'er came behind this person with a solemn face and asked, "He Shangshu, how is the situation?" ”

Hearing this, He Chou turned his head and saw that it was Laihu'er, sighed, and said, "Dashuai, the situation is indeed not optimistic." This Yongji canal is one hundred and fifty paces wide, and the water is deep and cold, and the current speed is so rapid that it is impossible to force the water to pass through. That Xu Shiji not only demolished the three bridges on the original river, but also built many fortifications along the river early, if it was attacked, the casualties would be very large! ”

Speaking of this, He Chou pointed to the distance, the arrow tower and watchtower that stood tall and densely towered. Even after a distance of nearly twenty miles, these arrow towers as high as several zhang are still clearly visible, and on the arrow towers, walking back and forth, they are densely packed with archers with bows and arrows on their backs and quivers. There were also the trebuchets lined up in the distance, each of which was piled up with large stones and small gravel, and it seemed that the other party had already prepared.

Lai Hu'er said helplessly: "It's inevitable to have sacrifices!" In my opinion, this Xu Shiji is by no means a vain person, his various camps are arranged quite exquisitely, and the five elements of the art of war, Qimen Dunjia are secretly combined between the camps, and the guards are tight, if our army wants to sneak attack, I am afraid there is no chance! ”

He Chou hooked his mouth and said: "Since the enemy general has been prepared, then you must have a bottom in your heart, this battle will not be easy!" ”

"What are the attacking options now?" Laihu'er simply asked directly.

He Chou shook his head and replied: "In addition to forcibly crossing by boat, there are only two ways to die!" ”

Laihu'er gritted his teeth and said, "No way, then use the two death methods together!" It's just that how do you plan to implement the erection of this pontoon bridge? ”

He Chouzheng said: "The pontoon bridge is to use many boats, arranged horizontally, from our side to the opposite bank, and then cover these boats with wooden planks, and then fix them with ropes or stakes into the river on both sides to prevent these boats from being washed away by the water." Boats can be in groups of ten, nailed together, covered with planks in advance, and simply thrown directly into the water to form a ready-made pontoon. The erection of this pontoon bridge needs to be carried out in sections, the first section first puts a dozen boats and stretches forward 20 steps horizontally, and then let the soldiers carry the pontoon boats of the next section, and then move forward, and stretch another 20 steps, and so on, while laying the boats, while nailing the planks behind the bridge deck, and the soldiers in front of them, after dropping the boats and planks, let them jump into the water, drive piles in the water, and advance steadily. As long as the pontoon bridge is successfully erected to the opposite side, it is the beginning of the infantry charge! ”

Laihu'er's eldest son, Sanqilang and Chaosan Doctor Laikai frowned and said: "Father, He Shangshu's method sounds quite troublesome, and in the process of erecting the pontoon bridge, he will be beaten constantly, it is better not to let the Xiaoguo army participate in the war first, and our sailors can force the crossing by boat!" ”

Before the words fell, the sixth son who came to protect the child, General Hu Benlang and Doctor Youguanglu came to veto: "Big brother, if you force the crossing by boat, it is almost a sure defeat!" The ten-mile-wide river has a turbulent flow and is suitable for large-scale login, so there is no way to race thousands of boats at once. Moreover, if the Goguryeo army uses rockets, small boats will not be able to resist, and large ships will also face the threat of trebuchets, even if they rush to the opposite boat, they will not be able to row back, and when there are many sunken ships in the river, the boats will be sunk in the second wave of attacks, so if you want to rush to the opposite side, you can only rely on building a pontoon bridge to force the rush, supplemented by the forced crossing of boats. ”

Laihu'er's second son, General Guo Yilang and Dr. Jin Ziguanglu asked Laihong: "Sixth brother, isn't the pontoon bridge made of wood?" The Wei army can also set rockets to burn, and when the time comes, only Xu Shiji only needs to command a concentrated attack, and as long as the pontoon bridge is burned, all the people who rush to the opposite side will be destroyed! ”

Lai Cheng shook his head and said: "The erection of the pontoon bridge can be carried out in multiple stages, as long as the silt is touched on the wooden pile, the fire attack will be difficult to work." Moreover, if we supplement it with ship transportation, we can continuously increase our troops to the other side, but the price of such a strong attack is inevitable! ”

Lai Hu'er immediately said in a deep voice: "Seeking wealth and danger, being a soldier and eating food is just for this moment!" Since there is only one way to storm now, then give orders to all military camps: at all costs, erect pontoon bridges and force the Yongji Canal to cross! For the warriors who attacked in the first wave, they all turned three times, and those who died in battle were given three times the training money! ”

"No!" The heralds who received the order saluted to the guards and left one after another.