The loud sound was accompanied by a heavy impact, which startled Cao Ergou, who was feasting, and the fat bacon that had been eaten half in his hand almost fell off.

He followed the prestige, only to see that a large hole had been smashed on the top of the city wall more than ten meters away on the right, the barrel of a light artillery had been smashed and deformed, and several soldiers who were eating next to him were frightened, and their bodies were also covered with falling cement dust.

Just as everyone was stunned, there were several loud noises and heavy blows. The ensuing blows made the thick walls of the fortress tremble slightly.

Cao Ergou poked his head out of the breastwork to look in the direction of the Mongolian army, only to see more head-sized stones flying towards the city wall from behind the earthen wall.

"All hidden, tiger squat cannon fire", Cao Ergou gave two urgent orders while hiding. The Tiger Squat Cannon placed on the top of the inner fort has already been set to shoot Zhu Yuan, and it only needs to be loaded and fired.

The Mongolian trebuchets could only hit the outer fort, so the tiger squat gunners appeared calm and carried out the trebuchets behind the earthen wall one by one

Roll call. Due to Ouyang Xuan and Cao Ergou's black bellies, Jia Gulong had always believed that the earthen wall could block the attack of artillery, so he only prepared for the surprise attack of the Thunderbolt army out of the city, and did not do any protection for the trebuchet - of course, even if he did, it would be in vain.

The target of Cao Ergou's attack was not a trebuchet, but a craftsman who operated it. The heavy Tiger Squat Cannon has a large charge, and the bean-sized shotgun it fires is extremely lethal to personnel within 30 meters.

After several rounds of shelling, the Mongolian trebuchets were all dumbfounded. In fact, there were very few trebuchets that were destroyed, and the reason why the fire was muted was that the craftsmen who operated them suffered heavy casualties.

Since the Tiger Squat Cannon was aimed at trebuchets, there were not many casualties among the new annex soldiers who were in charge of guarding it.

As soon as the cannon fired, they jumped into the traffic trench and fled, and the rest of the craftsmen ran back with them.

Although the launch time of the Mongolian trebuchet was very short, it caused a lot of losses to Yokohara Fort. The size of a human head is extremely powerful when it is accelerated by ejection.

The wall was only smashed out of a slight depression, but the south gate of Yokohara Fort was smashed and deformed, and the top of the city wall was also smashed with more than ten large holes, in addition to the loss of one artillery, there were more than a dozen soldiers who could not dodge were injured by rubble, three of them were seriously injured.

In fact, this result is also excellent, you must know that trebuchets are proper killing weapons in the era of cold weapons, and there is no city wall in western Sichuan that can withstand the bombardment of dozens of trebuchets.

The roof of the castle wall was built only to protect against arrows and rain, and it was obviously not possible to protect against stones the size of an adult's head.

However, although this top cover is not very defensive, it has a great effect. During this time, it was a hot summer day, and the roof blocked the scorching sun, which was well received by the soldiers guarding the fort.

On the other hand, on the Mongolian side, except for the cavalry, who could hide in the shady woods, the new annexed troops and the people were either in small and narrow tents, or in the trenches under the earthen walls, and they were really tormented by the scorching heat.

After eating the whip in the secret fire, Jiagu Longgu organized people to go to the earthen wall to reassemble the trebuchet.

The previous trebuchet had damaged some of its mechanical structures due to overload firing, and some of it had cracked, so it would not be used a few times.

It's just that the craftsmen had just climbed to the ground from the traffic trench and were shelled before they could even start work. The Thunderbolts set up an observation post on the top floor of the inner fort to capture every move behind the earthen wall.

Jiagulong was unwilling in ancient times, and drove craftsmen to assemble trebuchets, but they were bombarded without exception. After repeating this several times, he had to give up, after all, the craftsman was almost dead.

The secret one is now extremely annoyed in his heart. This time, he led his troops to attack the Thunderbolt army, and originally thought that it was a matter of hand capture.

According to intelligence, the Thunderbolt Army only has more than 1,000 soldiers, and the people are only 4,000 or 5,000 people, which is not worth mentioning at all.

In fact, the intelligence of the Mongolian army is still very accurate, and the ratio of soldiers to civilians in this era is generally between 1:10 and 15, and if you raise too many soldiers, the economy will often be dragged down.

Although there are tens of thousands of people under the rule of the Thunderbolt Army, most of these people are refugees, and they are not yet an effective population.

Even because of the development of industry, mining and commerce, the large profits obtained, and the large number of free labor in the labor camps, the Thunderbolt army was still financially stretched.

There is nothing wrong with the self-confidence in the secret fire, in terms of combat effectiveness, the combat power of cavalry with the same equipment is more than five times that of infantry, and it can even reach ten times.

If you want to say that there is something wrong in the fire of the secret man, it is wrong that he, like most people, belongs to the thinking of the era of cold weapons.

In fact, the secret Huoli is also an excellent general in the Mongolian army, otherwise he would not have been awarded the responsibility of stationing in the west of Tunchuan by the Great Khan of Mengke.

He had also heard about the failure of Yelumaizhu's attack on Wanjiabao, but he thought that it was caused by the new annexed armies of Dayi, Yongkang, and Qingcheng doing their own thing, Zhao Shicai's reckless advance, and the rugged and narrow mountainous area caused by the inconvenience of carrying siege weapons.

He had also heard that artillery was powerful, but he didn't pay much attention to it, after all, the loser always boasted about the strength of the enemy, so as not to appear too incompetent.

Of course, out of prudence, he still followed Liu Heima's advice this time, and prepared to exterminate the Thunderbolt army in one fell swoop.

However, the progress of the battle greatly exceeded his expectations, and after more than ten days of fierce fighting, not only did there be no progress, but also more than 2,000 people were lost.

Although the Mongol cavalry was only a dozen or so among the losers, and the rest were the new annexes and civilians who were killed and wounded and fled, it was still an unbearable defeat.

When the Jiagu Longgu Belt muttered the words of digging a tunnel, it was not surprising that he ate another whip from the secret one's fire.

Everyone knows that it takes at least two or three months to dig tunnels and attack a city. Although the Mongol army could dig from the earthen wall through a communication trench, the trench in front of Yokohara Fort was wide and deep, and although it had been filled in for a large part, it still needed to pass through under it, and the amount of work for just one tunnel was extremely huge.

Obviously, there can't be only one siege tunnel, because the defenders will definitely have countermeasures to destroy the tunnel.

The beaten Jiagu Longgu Belt was obviously very aggrieved. Although this Yokohara Fort is located on flat ground, it is more difficult to deal with than the forts in the precipitous terrain.

In dealing with the fortified city of Fort Li, the Mongols often adopted the siege but not the fight, trapping the defenders to death. However, to the west of Yokohara Fort is the Wenjing River, which seems to be blocked by a river, but it is also a natural channel.

As for the northern side of the fortress, which is only a few tens of meters from the mountain pass, the passage into the mountain is completely covered by the fire at the head of the wall, and it is impossible to use encirclement tactics at all.

The hundreds of new recruits who were besieging the city followed the fleeing folk into the mountain pass in a panic, and tried to turn back, but were beaten back by a burst of artillery fire.

It is said that this deserter of the new annex army was stuck on the mountain road between Yokohara Fort and Wanjiabao, and he was unable to advance or retreat, and he was thirsty and thirsty.

Those dozens of diehards who were unwilling to surrender tried to agitate for an attack on Wanjiabao, but not only did no one respond, but they were beaten with a blue nose and swollen face, and were tied up by the rest of the people and taken to Wanjiabao.

Jiagu Longgu also ordered people to climb to the top of the mountain north of Hengyuan Fort to check the situation, but the situation reported back was depressing.

Although the mountain is not high, it is extremely steep, and it is very dangerous for a strong person to climb it. What's even worse is that on the peak, it is still difficult for people to gain a foothold, and they can't place siege equipment at all.

The secret of these situations naturally knew in the fire, but he was angry but helpless, but he just suffered the cronies around him, and made a punching bag for no reason.