By the time allotted, Yuan's army had apparently shown no signs of surrender. The Yuan army on the city wall is actively preparing for war, and the Cao army under the city is obviously not idle, taking advantage of this time, the Cao army is also preparing for the siege of the city.

Yecheng is definitely an easy city to defend and difficult to attack, with its towering walls and wide moat making it daunting. However, Zhao Fei was not in a hurry to attack the city, and now the entire Hebei no longer had the strength to fight hard with the Cao army, as long as his army surrounded Yuan Shang, could he still be afraid that he would not be able to escape.

Moreover, the morale of the Yuan army is obviously high now, and it is definitely a thankless task for Zhao Fei to order people to storm Yecheng. Cao Jun had embarrassing catapults, and with these catapults, it was enough to make the Yuan army on the city wall suffer.

Zhao Fei didn't use these catapults when attacking Liyang, firstly because Zhao Fei wanted to hide his strength, and secondly because it was too easy to conquer Liyang City, and no one gave him such a chance at all.

Now it is finally the time for these counterweight catapults to exert their might, and after the improvement of skilled craftsmen, the power of Cao Jun's counterweight catapults has obviously increased a few points. This is Zhao Fei's reliance, even if Yuan Jun is cowered in the turtle shell, Zhao Fei can make them uncomfortable.

On this day, Zhao Fei gave an ultimatum to the Yuan army in Yecheng, if Yuan Jun Zhen Ji could not hold on and refused to surrender, the Cao army would launch a strong attack on the Yuan army in Yecheng. However, for Zhao Fei's words, the trial obviously did not take it to heart. The Yuan army in the city had already prepared, and they were ready for the Cao army to attack the city.

Without receiving a satisfactory answer, Cao's army left the camp and set up a position, showing that they were going to storm Yecheng. However, the soldiers of the Yuan army on the wall of Yecheng waited for a long time, but they did not hear the horn of the Cao army's attack and charge.

In this regard, Yuan Jun's soldiers felt quite puzzled. The Cao army under the city had already set up a position, but why didn't they attack until now.

Just when everyone was puzzled, Cao Jun's counterweight catapult was finally erected. One after another, the counterweight catapults took on a formation, looking murderous. Countless soldiers of the Cao army were transporting stones to the catapults, and now all the catapults were ready, just waiting for Zhao Fei's order, dozens of boulders would soar into the sky and go straight to Yecheng.

Zhao Fei looked at the catapult phalanx that had been fully prepared, then waved his hand and ordered all the catapults to start perspective.

With Zhao Fei's order, the catapults of the catapult phalanx launched an attack on Yecheng. One boulder after another was thrown into the sky by catapults, and they roared, flying towards the walls of Yecheng with a might that ordinary people could hardly match.

There was a loud bang~~, and a boulder smashed on the city wall, and this huge impact made people feel quite shocked. Although this boulder smashed on the wall of Yecheng, the soldiers of the Yuan army felt that the boulder had smashed into their chests, and the depressed crowd didn't know what to say.

Perhaps, the soldiers of the Yuan army did not have a chance to speak at all, and one by one a huge stone roared and smashed onto the wall of Yecheng. Of course, not all the boulders smashed on the city wall, and many boulders roared and hit the soldiers of the Yuan army on the city wall.

The boulder is obviously not something that can be resisted and confronted by manpower, and a boulder smashed on the person, and immediately turned this Yuan army soldier into a meat patty, and suddenly blood splattered, and everyone who watched it was stunned, not knowing what to do. Obviously, Yuan Jun did not expect that he was facing such a situation.

At this moment, the tall city walls could not bring people the slightest sense of security, and one after another boulders smashed all the hopes of the soldiers of the Yuan army. The boulder roared, constantly branching up towards the walls of Yecheng.

A round of boulders struck, and most of the soldiers of the Yuan army were already in fear. Even if he could hide behind the city wall, Cao Jun's trebuchet was so sharp, how could the city wall be able to withstand such a fierce attack by Cao Jun.

A round of boulders was thrown, and Zhao Fei showed a slight smile. This round is just a test of the waters, and the next is the time when Yuan Jun is most feared. When he was in Xuchang, Zhao Fei was not idle.

He already knew that Yecheng was definitely a difficult bone to gnaw, and in order to conquer Yecheng, Zhao Fei made sufficient preparations. In addition to improving the range of trebuchets, Zhao Fei also invented an incendiary bomb.

The oil is placed in a container with a cotton cloth as a lead. When the fuse is ignited and then thrown with a trebuchet, the oil is ignited when the vessel breaks, so that it can produce great destructive power in a very short time.

"Change the incendiary bomb!" Zhao Fei said in a deep voice to the soldiers beside him, although the incendiary bombs were still in the experimental stage, the experimental effect was surprisingly good, so when he set out on the expedition, Zhao Fei specially ordered people to prepare a lot of incendiary bombs.

Hearing Zhao Fei's order, the soldiers moved down the loaded boulders one after another and replaced them with the incendiary bombs ordered by Zhao Fei.

"Reloaded!" After loading the incendiary bombs, all the soldiers in charge of loading reported one after another. Each catapult has a different division of labor, some are dedicated to loading, some are responsible for transporting ammunition, and some are dedicated to firing.

"Ignition!" The general of the Cao army roared loudly. The soldiers' movements were uniform, and everyone lit the fuses one after another, and then released them with the yelling of the general. Dozens of incendiary bombs roared towards Yecheng.

I thought it was a boulder that soared into the sky, but this time the situation was obviously different, and one by one the burning things were thrown by the enemy, which surprised the soldiers of the Yuan army, and they didn't know what the hell Cao Jun was doing.

But then they knew, and the canisters rushed over with a flash of fire, and as the incendiary bombs burst, the oil splashed out, and then ignited by the open flame above the fuse, which instantly stirred up a large area of fire.

The soldiers of Yuan Jun obviously didn't expect that Cao Jun still had such a killing weapon, and the incendiary bombs attracted countless fires, so some of the fire oil was not ignited, but the incendiary bombs smashed on the soldiers obviously cost people's lives.

Only two rounds of incendiary bombs were dropped, and the entire Yecheng city wall was caught in flames.

Seeing this situation, the judge obviously didn't know what to say. The city defense equipment carefully prepared by himself seemed to have no effect at all, and Cao's trebuchet destroyed everything, and also destroyed the hope of victory for Yuan's soldiers.

One boulder after another, one incendiary bomb after another, Yuan Jun did not have any defensive measures at all. Fortunately, the Cao army did not attack at this time, otherwise, the Cao army must have taken the city wall of Yecheng.

Regarding the actual combat performance of the incendiary bomb, Zhao Fei was obviously extremely satisfied. After a few more rounds of throwing the trebuchet phalanx, Zhao Fei ordered the guards. At all times, siege engines are the key to the victory of a battle.

Seeing Yuan Jun trembling behind the towering city wall, Zhao Fei felt a heartfelt sense of pride. Yuan Jun is the opponent of Cao Jun, no matter how difficult Yecheng is, in front of the powerful Cao Army, there is still only a share of being conquered.

Today's battle let everyone in the trial and Yecheng know that the combat effectiveness of the Cao army and the Yuan army is obviously very different. Yuan Shang was very envious of Cao Jun's siege weapons, but envy was envy, he obviously had no way to target Cao Jun's trebuchet.

The only way to do this was to lead his troops out of the city and storm Cao's trebuchet phalanx, and if things went well, Yuan's army might be able to deal with the trebuchet threat. But it was not easy to attack Cao's position.

Zhao Fei obviously knew the power of the trebuchet, and in order to protect the trebuchet, Zhao Fei definitely arranged the most elite troops of the Cao army, focusing on protecting the trebuchet phalanx.

When Yuan Shao was in the limelight, there was no way to start a positional battle with Cao Jun one-on-one and break into Cao Jun's camp. Now, with these improvised troops, they want to break through the defenses of Cao's army, and then burn the catapults, which is obviously a fool's dream.

"If this disaster is not eliminated, how can our army defend Yecheng!" Looking at the trebuchet being dismantled under the city, and then looking at the embarrassed appearance of the soldiers on the wall of Yecheng, Yuan Shang looked at all the generals of the Yuan army angrily and asked.

There are not many defenders in Yecheng, even if with the supplement of the scholars, there are many defenders in Yecheng, but their number is similar to that of the Cao army that has become, only forty or fifty thousand.

It is true that there are many people who help defend the city, but it is obviously impossible to expect them to burst out with great combat effectiveness. The people are the people, and when they really go to the battlefield, they will only be slaughtered.

When everyone heard Yuan Shang's roar, they fell silent. Everyone knew that today's attack was nothing more than Cao Jun's experiment. Cao Jun's steps didn't make the slightest movement at all, just let the trebuchet cast a few rounds. But just like that, Yuan's army has already suffered heavy casualties.

Although the Cao army has withdrawn now, it is conceivable that the Cao army's attack tomorrow will definitely be more ferocious. Today, the Cao army sent a soldier and a pawn, and if the Cao army sent a large army tomorrow, the Yuan army on the city wall should deal with the menacing Cao army.

Looking at the silent crowd, Yuan Shang's heart couldn't help but sink. At this time, he regretted a little, and regretted that he was absolutely desperate to fight against Cao Jun. If he had chosen to abandon the city and surrender that day, I am afraid that he would not have been as desperate as he is today.

Cao Jun's catapult shattered the hopes of victory for many people, and of course even Yuan Shang was no exception.

Yuan Shang's changes were obviously seen by the judge, and he stared at the Cao army's trebuchet phalanx outside the city wall of Yecheng, and couldn't help but show a slightly hideous color. At this time, he had an impulse in his heart to destroy those trebuchets desperately.

But the judge knew that he shouldn't have such thoughts, so he rushed out of the city rashly, which was absolutely no different from sending him to death. There are already insufficient defenders in Yecheng, how can they withstand such a fee from everyone.

But did he really do nothing, allowing Cao Jun's trebuchet to be so arrogant. The judge was confused, and he was clever enough to clearly realize that the war had entered a stalemate. Cao Jun's powerful weapon hit himself a little stunned, and he was afraid that it would be difficult for him to come back to his senses for a while. Staring at the trebuchet that had become, the judge fell into deep thought.