Hou Xing was quite confident in holding the barracks. Although the Mongol army had now broken through the first line of defense, and there were no shells, grenades or mines in the barracks, there were still 1,000 muskets in the barracks with sufficient ammunition. With the remaining two deep trenches and two earthen walls, under the protection of the spearmen, these muskets could burst out with great combat effectiveness, which was also proven in the following battles.

The distance between the first earthen wall and the second earthen wall was only more than 30 meters, and at this distance, neither leather armor nor iron armor could withstand the scorching musket bullets, so the first wave of charging Mongol Han soldiers lost more than half of them before reaching the second wall, and the rest were stabbed to death by spears in the process of climbing the earthen wall.

The Mongol Han army had a large number of crossbowmen, who occupied the first earthen wall and condescendingly fired at the Thunderbolt soldiers behind the second earthen wall. The dense feathered arrows wounded many Thunderbolt soldiers, causing confusion in the defensive line for a short time. Taking advantage of this opportunity, the sword and shield soldiers of the Mongol Han army charged again. It's just that at this time, the Thunderbolt soldiers have already reacted, and they have raised large shields, and some use the earthen wall as a cover. Most of the feathered arrows of the Mongol army were blocked by earthen walls and shields.

Under the powerful counterattack of the Thunderbolts, the Mongols who rushed under the earthen wall were pierced back with spears, and the musketeers with their free hands crouched behind the wall and opened fire on the crossbowmen standing on the first earthen wall. Unlike the Perak soldiers, who were armed with breech muskets, who could shoot on their stomachs, Mongolian archers could not draw their bows while lying on the ground, but could only shoot arrows from a standing position. They stood in a row on the earthen wall, and now they were excellent targets. The distance of more than 30 meters, combined with the dense formation, allowed the musketeers to hit the target without aiming. After a round of gunfire, the crossbowmen fell a large piece from the earthen wall.

In order to prevent accidental injury, when the Mongol infantry attacked, trebuchets and ballistas stopped firing. Without the suppression of siege weapons, the musketeers inflicted extremely heavy casualties on the Mongol army. The dead soldiers who charged under Liu Yuanzhen were tall and heavy-armoured, and their strength was bursting, and ordinary bows and swords couldn't help them at all, if they were against an ordinary Song army, the camp would have been broken by them a long time ago. It's just that the thunderbolts they encountered, under the fire of muskets, even if the thick heavy armor would not be penetrated, the soldiers would fall to the ground due to the huge impact, vomiting blood and even internal injuries and falling to the ground.

While the Mongol Han army was charging head-on, the new annex army was also constantly attacking the camp on the flank. However, the thunder of their attack was heavy and the rain was small, and the shouts of killing shook the sky but they refused to move forward, and as soon as the thunderbolt muskets rang out, they receded like a tide.

Fierce battles lasted from noon to dusk. After a day's strong attack, the Mongolian army lost more than 1,000 people, of which the new annex army lost less than 500 people, and the rest were Liu Yuanzhen's Mongolian and Han army, which can be described as heavy casualties. Although the first earthen wall was captured, even if the camp could be broken down like this, there would not be many remaining 3,000 Mongol and Han troops.

The bloody reality made the two brothers Liu Yuanzhen and Liu Yuanli wake up from the pain of losing their father. People can't be resurrected after death, and if they insist on fighting all the people and horses in their hands because of their willfulness, the gains outweigh the losses. The reason why Kublai Khan relied on Liu Heima and other Han military princes was not because they were highly respected or virtuous, but because they took a fancy to the soldiers and horses in their hands. In this troubled era, only soldiers and horses could open up territory and plunder resources for the Mongols, and without soldiers and horses, they would be nothing. Thinking about the stakes, Liu Yuanzhen regretted his impulsiveness in his heart, but he hated Liu Cheng more and more.

It's just that the slogan of revenge for the father has been shouted out, and it can be easily taken back there, but the attack can no longer be brutal, and it will be blindly attacked. On the second day, Liu Yuanzhen ordered the siege equipment to move forward, and then attack after completely suppressing the Thunderbolt army of the second earthen wall. Seeing that Liu Yuanzhen's offensive was slowing down, Niu Xuan was in a hurry, and urgently summoned him to come for questioning. He had just received news that the naval army led by Zan Wanshou had broken through the water barrier ten miles downstream of Fushun City, and was tracing the water, and the 3,000 Banzhou troops were also advancing along the riverbank.

Although Zan Wanshou still needs to break at least three water barriers to reach Fushun City, Niu Lin also knows that these water barriers are temporarily set up, and they can't stop the Thunderbolt warships for long. In order to delay Zan Wanshou's actions as much as possible and buy time for Liu Yuanzhen's attack, he had ordered to send a thousand cavalry to harass the Banzhou army. As long as the pace of the Banshu Army slows down, the speed of the Thunderbolt Army warships will naturally slow down.

Liu Yuanzhen's answer was reasonable, and it made it impossible for Niu Xuan to order him to storm the camp. On the one hand, the firepower of the Thunderbolt muskets in the camp is really fierce, and the assault is simply to send people to the head, on the other hand, the Mongol Han army is the core of the Mongolian army's foot battle, and it is really going to be consumed, is it difficult to rely on the Mongolian cavalry to attack the camp? Those new annexes simply can't be counted on.

In his anxiety, he had no choice but to comfort Liu Yuanzhen on the one hand, and strictly ordered the new annexed army to fully cooperate, and retreated from the latter's military justice without authorization. Of course, in order to motivate his subordinates to work hard, he may have promised a high reward from the senior officials, and asked all the troops to cooperate and be sure to capture the camp within two days and annihilate the Thunderbolt army.

As the Taoist goes: slow is fast. After Liu Yuanzhen changed his tactics, not only did his men suffer a lot fewer casualties, but the attack also went a lot smoother, and he actually made the Thunderbolt army's defense line full of dangers, and he was tired of parrying for a while. Hou Xing also realized that neither the sword and shield nor the crossbowmen of the Mongol Han army would inflict fatal losses on the Thunderbolt soldiers protected by trenches, earthen walls, and shields.

The real threat is the siege weapon, in the face of flying boulders and crossbow arrows with thick arms, whether it is a shield or armor, it is like paper, only the thick earthen wall can barely block the attack, the hit person is killed instantly, and the person who is wiped is also either dead or injured. Under the firing of more than 100 trebuchets and ballistas, in less than a quarter of an hour, the Thunderbolts' defensive line on the second earthen wall collapsed, and the casualties reached more than 400, more than the casualties of the previous day's battle.

At this time, Hou Xing had already received information from the cavalry risking death - the warship led by Zan Wanshou had arrived seven miles downstream of Fushun City, but it still needed to break through the three water barriers set up in the river, and it would take two days to join Hou Xing as soon as possible. The Perak army only had three earthen walls, and yesterday the Mongols broke through the first wall, and today it broke through the second wall in less than an hour.

If the enemy's siege engines are not disposed of, at this level of intensity, the third earthen wall will probably be breached today. At that time, although the thousands of Thunderbolt troops and basic militia in the camp will fight to the death, even if they can fight to the death, it will be difficult to stop the Mongolian army that has already killed the red-eyed when they run out of ammunition and food. What's more, once the defense line was broken through and the Mongol cavalry rode in, the infantry would only be slaughtered.

At this critical juncture of life and death, Hou Xing gritted his teeth and finally gave an order that made him painful. With the sound of the loud brass horn, the gate of the Thunderbolt Cavalry Brigade two miles southwest of the infantry camp slowly opened, and a large number of cavalry rushed out. They first rode their horses and trotted, and then the speed of their horses became faster and faster, and they charged straight towards the Mongolian siege weapons position northeast of the camp. Seeing the Thunderbolt cavalry attacking, the Mongolian cavalry that had been resting behind Liu Yuanzhen's tent turned over their horses one after another, and rode their horses to attack the flank of the Thunderbolt cavalry.