When Wei Wentong said this, the generals around him couldn't help but exclaim in a low voice. Everyone felt it was incredible. How could it be done if there were no more than 500 soldiers' casualties to attack Hulao Pass in one day?

At this time, Huya Lang General Zhang Jike suddenly asked, "Did the general arrange an army to attack from behind?"

Wei Wentong shook his head and smiled, "Although attacking from behind is a good way to attack the pass, it is of little significance to Hulao Pass. Both sides of Hulao Pass are majestic cities, and at most they are just scattered defenders. I don't need to do this, I will use normal attacks and capture Hulao Pass tonight."

Seeing that everyone's faces showed disbelief, Wei Wentong pointed to the wooden model of Hulao Pass with a wooden pole and said to everyone: "When I was guarding Hulao Pass, I wrote to the Ministry of War twice, asking the court to rebuild Hulao Pass immediately. On the surface, Hulao Pass is still very strong, and the outer wall is made of bluestone, but what support is it in the city wall? I thought it was filled with sand and gravel, but later I found that it was not, but thousands of large woods supported in the city wall. Despite the 50 years of rain erosion and ants worms, these woods have long been rotten and broken in one blow. Unfortunately, until I left Xingyang north, the court did not rebuild Hulao Pass. Later, I heard that Wang Shichong planned to rebuild it. Perhaps because he controlled Xingyang County and Hulao Pass had become Neiguan, it was not rebuilt in the end. Therefore, the city wall was only solid on the surface, but as long as he was severely hit, it would collapse in large areas."

Only then did everyone realize that a Huya Lang general said, "It turns out that the general has built four heavy trench machines to deal with the exterior walls of Hulao Pass!"

Wei Wentong nodded and pointed to the north city wall and said, "Compared with other city walls, the northernmost section of the city wall is the most serious problem. There are about two hundred feet long. I once found that other city walls are made of large bluestone, but this section is not, it is actually made of ordinary fired acre bricks. Perhaps because of the use of bluestone, after decades of wind and rain, these acre bricks are almost pulverized. We can start from here and smash a passage into the city."

Wei Wentong accurately pointed out the weakness of Hulao Pass. Everyone suddenly rubbed their fists and wanted to start a war immediately. They asked one after another: "General, when will we attack?"

Wei Wentong said lightly: "The military order I made to the general is to take down Hulao Pass in one day. We will fight to Hulao Pass at noon. Then we must take down Hulao Pass before noon tomorrow. Considering that the assembly of heavy trench machines will not be completed until at night, I decided to start the attack at the third update tonight. In order to cover the offensive in the North City, we must create some momentum at the city gate."

In the temporary barracks of the Sui army, hundreds of craftsmen were nervously assembling parts of the trench machine. This time, the Sui army transported five giant trench machines with ships, which could throw 100 kilograms of stones to 350 steps away. They are sharp weapons for siege. Especially for the weaknesses of Hulao Pass, these five giant trench machines will play a crucial role.

More than a hundred craftsmen were busy until night fell. Five giant trenchers were finally assembled, like five giants standing in the dark night. Each giant trencher was as high as three meters high, which was the same height as the Hulaoguan city wall. The throwing pole was as long as six meters long. It was thrown with an iron chain winch. Six huge wooden wheels were installed below. Each trencher required fifteen oxen to pull, fifty soldiers were responsible for manipulation, and ten craftsmen were also required to solve the problems that arise during throwing at any time.

As the night gets deeper and time gradually reaches the third day. Although the soldiers at Hulao Pass are still very vigilant, compared with the daytime, there are still many fewer soldiers guarding the city, only about 30% of them during the day, and their mental state becomes very poor. Most of them are exhausted and leaning against the city wall and napping.

At this time, a strange sound came faintly from the distance, creaking and particularly harsh. The soldiers who were dozing were awakened one after another and looked out of the city. Gradually, a huge figure appeared hundreds of steps away, as if a giant god descended from the sky. Many Zheng soldiers were so scared that they shouted loudly.

‘Dang!Dang!Dang!’

The bell rings rapidly on the top of the city, and the soldiers who are sleeping on the top of the city are awakened and get up from the ground. When they rub their sleepy eyes, they are immediately frightened by the giant spirit god in front of them. However, soon a general discovered the truth. A side general shouted: "Don't panic, it's a catapult!"

"It's a catapult!"

The soldiers told them that their fear gradually subsided. They set their bows and arrows to fight to the death with the attacking Sui army.

Dozens of bed crossbows were also installed. Zheng soldiers began to pull the bowstrings and prepare to shoot. The arrows of this bed crossbow are two feet and five inches long, with a shaft thicker than a thumb, with a range of five hundred steps. They are a sharp weapon against slashers. A captain on the top of the city shouted, "Prepare to shoot!"

The Sui army's giant catapult appeared 350 steps away from the city tower, located in the middle of Hulao Pass. Currently, there is only one. Its mission is to create panic at the top of the city and cover the attack of the North City.

The giant catapult has been placed in place. The Sui army has rich experience in siege. The giant catapult is not without protection. The catapult is usually placed on a hillside or behind a large stone. If it is a flat field, then you have to find a way to raise a shield for the catapult.

The huge shield of the Sui army was also ready. It was built with logs. It was also as high as three meters high but four meters wide. It protected the catapult and fifty manipulators intact.

As soon as the catapult was located, the crossbow arrows on the top of the city were roaring and shooting. The soldiers hid behind the giant shields. The big arrows crackled on the shields, but they could not destroy the giant catapult. At this time, the catapult's winch began to squeak under the push of twenty soldiers, tightening the long throwing rod.

Three soldiers put a pot of pot containing more than 60 kilograms of high-sub turbulent oil into the iron bag. As the commander brigade coach shouted, "Let it go!" The six-meter-long throwing rod ejected and shot the huge pot. The pot of pot drew an arc in the air, and the soldiers on the top of the city shouted immediately, but the pot of pot was not an attacking soldier, but hit the dark city tower. As the pot of pot was broken, a large amount of turbulent oil flowed on the city tower.

"Cum again!"

The trencher shot out a huge pot of clay pot once again. The pot of clay pot hit the city tower and shattered, and tinder oil flowed all over the ground.

The panic of Zheng Jun soldiers gradually disappeared and became confused. Almost all soldiers had never seen this black oil produced in Gaonu County. They didn't know what its purpose was, but they just thought it was pungent and unpleasant. A few brave soldiers even dipped their fingers in a little and sent it into their mouths.

At this time, the soldiers surrounded the south of the city tower dodged away, and saw the lord general Wang Honglie walking quickly. He lived in the city and just received the news, a general of the Lang hurriedly stepped forward to salute, "See Your Highness!"

Wang Honglie felt a little relieved when he saw that the Sui army did not attack the city, but he was also puzzled by the black oil flowing on the eaves, "What is this?"

"Report to your highness, we don't know what this is. Some soldiers said it seemed to be used to lubricate the grease of the axle."

Wang Honglie frowned, and used a wooden stick to lift a ball of oil, flowing downwards with black and greasy. Suddenly, the soldiers on both sides shouted, and another pottery jar roared and hit the attic above Wang Honglie's head. The pottery pieces burst into pieces, and the shiny black turmeric oil flowed down. Wang Honglie was pulled away by the soldiers in time and avoided the bad luck of black oil splashing, but several soldiers next to him were splashed all over his head.

Even so, Wang Honglie was still cut through his cheek by a piece of pottery, and blood immediately flowed down. Wang Honglie was furious and shouted sternly: "All soldiers return to their positions, no onlookers are allowed!"

At this moment, a low sound of deer antlers sounded under the city, "Woo--"

Everyone looked down at the city, and a soldier suddenly pointed to the distance and shouted: "Look, the enemy is coming!"

In the dark night, dense figures came from a distance to the city wall. The soldiers on the city were suddenly nervous. Wang Honglie was even more shocked and his face was pale and he shouted in a trembling voice: "Prepare to shoot arrows!"

Without him shouting, thousands of Zheng soldiers raised their bows and arrows one after another. Due to the lack of unified command, many soldiers were panicked and began to shoot arrows under the city randomly.

A thousand Sui soldiers rushed over with their big shields and quickly formed a shield wall one hundred and fifty steps away from the city wall. At this time, fifty burly soldiers rushed forward. They two of them worked together to operate a big yellow crossbow. One soldier raised the big yellow crossbow over his head and aimed the arrow at the city tower. Another soldier lit the fire at the front of the arrow, and twenty-five rockets appeared.

"Shoot!" With a command, twenty-five rockets shot towards the city tower together, and the city tower filled with tinder oil burned rapidly.
Chapter completed!