The Tang army crashed on the barriers like a sea tide, but under the tight defense of the Sui army, these barriers were like rocks and were swallowed by the tide from time to time.
After the tide receded, they were safe and sound.
Those Tang soldiers who climbed often had their heads or chests pierced by a steel gun as soon as they exposed their chests on the barrier.
Some were stabbed in the stomach or legs by short spears as soon as they stood on the top of the barrier, and they bent forward in pain.
As soon as some took two steps forward, their hamstrings were cut off by sharp steel blades and they fell on the barrier.
Of course, the Tang army was not willing to be the one being beaten.
Some spearmen or spearmen jumped on their companions who were crouching in front of the barrier, acting as a "human ladder", and raised their guns to stab at the other side of the barrier indiscriminately.
However, this kind of attack often has no effect, and the gun is often grabbed by the barrel or the head of the gun is cut off.
Across the wide barrier, the opponent also poses no threat to them.
There were more and more corpses in front of the barrier, more and more Tang troops gathered, and the offensive became more fierce.
More and more Tang soldiers jumped into the trenches to engage in hand-to-hand combat with the Sui troops.
When the battle was heating up, dozens of fireballs flew out of the Lion's Castle and landed about a battle distance in front of the barrier.
Dozens of huge flames rose into the sky and spread to all directions.
Not long after, another round of explosive bombs struck, and the pillars of fire gradually formed a wall of fire.
Hundreds of Tang soldiers who were burned into fireballs were wailing and rolling.
"Withdraw" Li Shimin put down his telescope and ordered.
This wave of attacks was just a prelude before his official attack, in order to find out the weaknesses of the Sui army.
Now, he believed that he had found a flaw in the Sui army's defense from this attack.
He believed that as long as the Tang army's attack speed was fast enough and they quickly rushed into the center of the enemy camp, they could break through the Sui army's camp, and those explosive bombs were nothing to be afraid of.
What affected the attack speed of the Tang army was only the barrier and the trench behind it.
After the Tang army withdrew, Li Shimin counted the number of people and found that there were more than 30,000 casualties in one hour.
The excessive casualty ratio demoralized the Tang army.
Seven days later, the Tang army launched another offensive.
This time Li Shimin prepared a secret weapon: a springboard.
These springboard cars have two huge wooden springboards on top of the carriage.
One end is connected to the rotating shaft, and the upper end is pulled by a rope, like a movable two-way suspension bridge.
The car arrives in front of the barrier and puts down two springboards to connect the outside of the barrier to the other side of the trench.
In this way, the Tang army could rush through these barriers as if they were on flat ground, even with cavalry.
During these seven days, Tang Jun built hundreds of such springboard vehicles.
At the same time, Li Shimin, determined to decide his life and death in a decisive battle, also threw the most elite troops of Xuanjia Army and Changlin Army into the attack, and they all acted as forwards.
The attack turned out to be exceptionally smooth.
On both the north and south lines, more than a hundred people on springboard vehicles quickly approached the Sui army camp at Lion Castle under the cover of overwhelming flying rocks and arrows.
At this time, the springboard vehicle approached the Lion's Bastion and lowered the springboards one after another, forming more than a hundred wide "overpasses" on both sides of the trench barrier.
The more than 100,000 Tang army infantry and cavalry following behind surged toward these "overpasses" like a tide from the north and south.
The Sui soldiers in the trench did not resist as hard as last time.
When the Tang army was still twenty battles away from the defense line, they withdrew like the second line of defense in the rear.
The Tang army rushed into the camp, which was already surrounded by fireworks, but found no trace of the Sui army.
Yu Chigong, who rushed into the camp first, felt that something was wrong.
He pulled the reins of his horse and was about to observe carefully when suddenly there was a muffled sound and he fell straight down from the saddle like a wooden stake, with a three-foot stick stuck in his head.
What a long heavy arrow.
The Xuanjia Army soldiers around him hurriedly helped him up, but he had already died of anger.
The heavy arrows of the longbowmen whizzed from the highest point of the Lion Castle one after another.
The first to kill were the generals of the Tang Army wearing generals.
The generals of the Tang Army fell off their horses one by one, and those who survived quickly jumped off their horses and used large shields as cover.
Gongsun Wuda and other generals who were commanding on the battlefield shouted with red eyes: "Arrange the shield soldiers to cover."
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After a while, the Tang army finally formed a shield wall and continued to advance.
Outside the camp, under Li Shimin's instructions, more than a hundred catapults were being pushed forward, preparing to bombard the Lion Castle.
The advancing Tang army finally discovered the second line of defense hidden in the wormwood shrubs.
This line of defense had no barriers, only trenches, which were usually blocked by wormwood shrubs two or three feet high.
Even Li Shimin, who was using a telescope, did not notice it.
Thousands of Tang troops could not stop due to the inertia of the queue, so they jumped into the trench one after another and then climbed up.
The Xiaoguo army was lying prone in the grass behind the trench, and the Weiwei guards suddenly stacked up their prepared oar shields to form a thick shield wall behind the trench.
The pikemen's spears intensively attacked the Tang army in the ditch and the Tang army who were about to climb out of the ditch edge from above the shield wall.
The Tang army at the bottom of the ditch was killed by forest spears like medicine dregs crushed with a medicine pestle in a stone trough.
By the time the Tang army generals who were commanding the troops discovered the problem, a two-foot-high pile of corpses had already been piled up at the bottom of the trench.
The Tang army general at the forefront was commanding in a hoarse voice.
While ordering the entire army to stay in position and stop moving forward, he ordered the archers and crossbowmen to concentrate on shooting at the Sui army formation on the opposite side of the hidden trench.
The arrows like a downpour forced all the Sui soldiers to duck and hide behind the shield wall.
Some elite soldiers of Xuanjia Army Commander Lin Army took the opportunity to cross the trench and crouched forward to risk being accidentally injured by their own arrows.
Following the orders, the Sui army retreated neatly under the cover of oars and shields, and gradually retreated into the Lion's Castle.
The Tang army finally gained a foothold opposite the second trench, and quickly formed a defensive formation to prevent the Sui army from counterattacking in the fort, and to cover more Tang troops from crossing the trench.
More than a hundred catapults have been pushed to the first trench of the Lion's Castle camp and began to launch a fierce bombardment on the walls and gates of the Lion's Castle.
At the top of the Wubao city, Yang Guang put down his telescope and coldly ordered: "Get ready with the ballistae to destroy all the Tang army's suspension bridges."
Following his order, thirty ballistas adjusted their gun positions according to preset firing parameters.
The ballistaemen stepped on the flywheels and began to fire a volley of explosive shells.
Hundreds of explosive bombs were accurately tilted onto these suspension bridges in a matter of seconds, quickly igniting fires that reached into the sky.
This round of shelling shocked Li Shimin.
He knew that the opponent had ballistas and explosive bombs, but he believed that as long as he acted quickly, hundreds of explosive bombs would only cause hundreds or thousands of casualties on his own side.
It cannot influence the situation of the battle.
But he didn't expect that these ballistae were so accurate and the rate of fire was so high.
One wave of bombardment could burn all his "suspension bridge vehicles".
This is really puzzling.
Li Shimin suddenly realized Yang Guang's trick.
This was probably another trap.
He ordered with red eyes: "Order all the catapults to blast the Lion Castle.
They must be blasted away in a short time, otherwise the consequences will be disastrous
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