The violent explosion caused strong sound waves, and this time it was obvious that it was not just the attacks of those copper cannons. The explosions were carried out in a series of ways, so there was no doubt that these explosions came from the "Flying Swallow Iii-type crossbow cannon" arranged by Zhao He in the central fortress. Only when it was performing rapid fire could it reach such a high speed.

Moreover, the clever Liu Qian did not let his subordinates use shells with bottom exhaust. In that case, the Mongolian soldiers would not stop their "reincarnation cannons" within the firing range of the "Flying Swallow iii type crossbow cannons", and now Liu Qian has the opportunity to deal with most of the "reincarnation cannons".

Just as it was fired at the fortress in front, the "reincarnation cannon" of the first artillery shell was destroyed by the artillery fire under Liu Qian's command, the artillery shells it fired had already flew to the place.

The huge jar-like shell hit the stone wall of the tower and did not break. The thick porcelain was full of cracks. This may reduce the power of gunpowder when it exploded, but it was not the case. When the "rumbling" explosion sounded, the entire tower also trembled. When Zhao Xu built the castle, although some technologies from Arabia and Europe were used, it still could not be compared with the reinforced and cement technology of the "Huaxia Empire".

The trembling tower did not fall, although the explosion scared the people on the tower. This was not because the explosion of the shell was not very powerful, but the explosion just happened a few meters away. This shell was made by Zhao Xu based on the shells made by himself and improved by Shi Zhidong. The innermost part was a layer of copper shells of Pupu, which made the outside porcelain shells thin. The advantage of this is that the outside porcelain shells can usually be separated from the moisture and become prefabricated fragments when exploded.

Of course, this is just the progress that Zhao Xu's craftsmen were unintentionally making. Because they only rely on their intuition to explore the direction of thermal weapons inclusion, their goals are a bit too slim.

However, the huge explosion still caused casualties to the castle. This shocked the soldiers in the castle, because from the start of the war to the present, they were injured at most, and very few people died in battle. As for the attack of thermal weapons, they have always had the advantage. Although the "reincarnation cannon" fired was immediately blown up, this fear has already made the soldiers worried.

Liu Qian was a man who had experienced the battle. Although he was far inferior to He Qi's ability to lead the army, he would not be too scared when facing the explosion of a shell. Moreover, at this moment, he was huddled in the central tower of the result, and it was even more difficult to blow him up.

At this moment, he focused on the Mongolian army's "reincarnation cannon" with his telescope, guessing in his heart whether they were subject to strict orders. Faced with such fierce firepower, he was still moving forward together.

The Mongolians were brave, and the driver of four Mongolian horses who dragged the "Reincarnation Cannon". He waved his boots desperately, trying to get his "Reincarnation Cannon" to the attack position. Everyone understands what is happening in front of him. If the reincarnation cannons in front of him enter the range together and fire all their nearly 100 shells into the castle together.

Whether it is a small cannon shell or a single large cannon shell, the resistance power in the entire fortress will be reduced by at least about half. However, Liu Qian, who was in the central tower, was happy that the Mongols did not do that, and they did not even dispatch the other three reincarnation cannons.

This only proves one thing, that is, their main force is confronting Zhao Xu's army at this moment. This confrontation makes them unable to launch a siege from all sides at the same time. Especially at this moment, the Mongols are actually in a very embarrassing situation, and they are worried about the opponent's artillery fire. If they do not attack, the opponent does not seem to have planned to put their cavalry under their "reincarnation cannon" and let them bombard them.

But at this time, when the rain stopped and the Mongols began to launch a second fierce attack on the castle, Zhao Xu still did not move. In fact, he was still delaying. At this moment, what he hoped was that the army led by Prince Kublai Khan could occupy the territory of the princes around Borjijin and Alibuge. At that time, Borjijin and Alibuge's army naturally had a great morale, and that was the time for him, Zhao Xu to truly counterattack.

"No, don't worry, He Longwei, we still have some fighting in this battle. Let's delay him for two days first. My only hope now is that Liu Qian can stay for these two days. As long as he keeps it well, we will be developed!"

"Yes Xu is wise!"

He Qi was a little depressed. He did not ask to go out to attack the Mongolian army. However, when he looked back, he also understood what Zhao Xu meant. Because it was not really talking to himself, but he was emphasizing his own determination. At this moment, Liu Qian's actions made Zhao Xu really happy.

"I can't tell, this kid is a bit stern!"

At this time, groups of shells were fired from the fortress castle, and their targets were directly aimed at the "reincarnation cannons" that reached various places. They unfolded one by one and fixed their bodies. This was the preparation work that would inevitably be carried out when the "reincarnation cannons" were fired.

"Now, it's now..."

Liu Qian, who had been staring at the battlefield with a telescope, barking wildly, and the signal flare in his hand was fired again. This was the moment when he used all his power to attack, that is, he wanted to use all his power to turn most of the "reincarnation cannons" in the Mongols' besieged city into some burnt wooden stakes.

With his order issued, all the "Flying Swallow Iii-type crossbows" in the central castle launched intensive attacks. 15 shells per minute, the copper cannons returned to the towers, and attacked the "reincarnation cannons" that stopped and became extremely easy to be hit. And this time, Liu Qian also used a weapon he had not allowed to use - the "reincarnation cannon".

Although it is certainly not as good as the "Flying Swallow Iii type crossbow", and it cannot be compared with the "Flying Swallow Iii type crossbow". One advantage is that it can immediately fire a large number of projectiles.

Groups of shells flew across the sky, and they exploded in front, back, left and right of the Mongolian army's reincarnation cannon. The ignited shells exploded on the spot, while the gunners were dizzy in the explosions.

There is no better weapon to deal with siege equipment, mainly wood, than shells with tinder oil. If used well, they can blow up rain flames in the sky and spread the burning flames to all directions. Unfortunately, almost all the easily obtained oil is controlled by Zhao Fubo. As for others, they can only spend a high price to buy lamp oil.
Chapter completed!