After shooting into the city wall, more than two-thirds of the arrow shaft is deeply pierced into the city wall, leaving less than one-third of the outside, and the sturdy arrow shaft bears the weight of one or two people, almost unscathed, so the pedal arrow can be used as a siege ladder.

This is almost the most basic use of the bed crossbow in siege warfare, although the bed crossbow can also be used to attack targets on the city wall, but because most of the soldiers defending the city are shrunk behind the battlements of the city wall, it is difficult for such a long crossbow arrow to effectively attack the target, and most of the time empty arrows will be released.

The cost of the bed crossbow is much higher than that of ordinary bows and arrows, and this kind of dry method of fighting mosquitoes with large artillery is a pure waste, so more often the target of the bed crossbow is the city wall, after all, in that case, a shot is accurate, the arrow is not missing, and there is almost no waste.

Of course, Sima Yi will make such an arrangement according to his usual experience, since the damage to the cloud ladder in Bingzhou is relatively serious, then Sima Yi will naturally think of another way to attack the city, that is, to use the treadmill arrow to build a passage to the city.

In the siege of the city before, Sima Yi also used this method many times, this method is naturally tried and tested, helping Sima Yi to capture a lot of cities, the most fierce of which is the battle of Xiangping in Liaodong, Sima Yi is precisely because of the large-scale use of treadmill arrows, to take Xiangping City, capture Gongsun Yuan.

This time, Sima Yi naturally did the same, wanting to use the bed crossbow to open up another passage for siege.

But I didn't expect to kick it to the iron plate this time, the city wall of Jiexiu City, is not an ordinary rammed earth city wall, the structure of all masonry, so that the strength of the city wall is doubled, although the power of the crossbow arrow is amazing, but if you want to completely penetrate the city wall of Jiexiu, it is simply beyond your strength.

The bed crossbow shot to the city wall, at most it will destroy a layer of skin outside the city wall, collapse a few green bricks, can not penetrate into the city at all, some crossbow arrows can not even shoot through the city wall, after the arrow hits the city wall, it falls to the city, even if it is barely pierced into the wall, it is only a few inches, the long arrow shaft left outside trembles and trembles, and there is a possibility of falling at any time.

Such crossbow arrows could not be used as stepping arrows at all, and Sima Jun fired several rounds of crossbow arrows, at most, they could only cause some skin trauma to the city wall, and they could not shake the basic structure of the city wall at all.

As for Sima Yi's tactical concept, it is even more absurd.

However, this is also the last attack of Sima Jun's bed crossbow, regardless of whether its attack is effective or not, it is regarded as a threat to the city by the state army, and it is naturally locked by the catapult.

Sima Jun can destroy an arrow tower, it is already a very lucky thing, but the accuracy of the catapult of the Bingzhou army is very amazing, such as the catapult and the bed crossbow This fixed target, on the battlefield, is like a live target, even if the first few rounds of stone projectiles do not hit, and the state army has a great chance of knocking it out after appropriate adjustments.

Therefore, although Sima Jun's catapult has been very tenaciously into the battle, but still cannot escape the same fate as yesterday, under the repeated blows of the stone bullets of the Bingzhou army, the catapult and the bed crossbow are heavy losses, less than half of them can persist in continuing the battle, there are less than half of them left.

Sima Yi's face was extremely solemn, although he had learned about the entire battle situation through the battle report yesterday, but reading the battle report and watching the battle directly on the spot were completely different feelings.

When he saw the battle report, maybe Sima Yi didn't think that the catapult of the Bingzhou army was so powerful, maybe it was the people on the front line who exaggerated it in order to cover up the defeat, but now seeing is believing, and he can't believe it, it seems that Cao Liang has indeed made great improvements on the catapult, otherwise, under the same conditions, the catapult of the Bingzhou army cannot be so powerful.

Although the catapult is not the only weapon in the siege, there is no doubt that the catapult is an indispensable and important weapon in the attack and defense of the city, and if it is helped by the catapult, the speed of the siege can naturally be accelerated, and the casualties of soldiers can be greatly reduced.

But this catapult showdown, but Sima Yi clearly saw the existence of the gap, when Ma Jun proposed to the imperial court to improve the catapult, no one agreed, even Sima Yi is no exception, maybe people feel that the catapult has already been finalized, so what is the need for improvement, Ma Jun's move is just grandstanding.

But it wasn't until today that Sima Yi realized his mistake, and the plan that Ma Jun proposed at the beginning was not unnecessary, but very necessary.

Cao Liang was close to befriending Ma Jun, and it was from Ma Jun's hands that he obtained the improved drawings of the catapult, so the catapult of the Bingzhou Army would become so powerful, and it would completely explode Sima Jun's catapult on the battlefield.

If Sima Yi could have listened to Ma Jun's opinions and mastered the technology of the new catapult, then today's situation would not be so embarrassing and passive.

It's a pity that there has never been an if, what I didn't grasp at the beginning, and now it's useless to regret it, Ma Jun has passed away, Cao Liang has become the only person who has mastered the improvement technology of catapults, and it is almost impossible for Sima Jun to surpass him in this regard.

"Withdraw catapults and bed crossbows out of enemy range." Sima Yi turned back to Chen Qian and said.

In the current situation, it is only a matter of time before the catapult is destroyed by the Bingzhou army, under the precise attack of the opponent's catapult, these catapults may not be able to support much time, and the catapult of the Sima army did not cause much substantial damage to the defenders, and now only two arrow towers have been destroyed at most.

If the status quo continues, the more than 100 catapults that have been reinforced today will probably not be able to escape the fate of the total annihilation.

Chen Qian heard Sima Yi's instructions, and also knew that Sima Yi gave up the use of catapults, after all, catapults are under the suppression of the other party, it is difficult to achieve victory, retreat at this time, but you can also keep the next part of the catapult and bed crossbow, but if you continue to fight, I am afraid that Sima Jun can only have a pile of rotten wood left. Baidu: Read the latest chapter of "The Last Three Kingdoms 2 Xingwei Jiezhong Literature" for free for the first time.