Since no one else came up with a countermeasure, Sima Yi's second strategy became the only option. The order was soon issued, and the troops on the Eastern Front reformulated their action plan in accordance with Sima Yi's second strategy.

Now instead of dispatching hundreds of rocket launchers again, they only use 20 at a time to bombard Wei's super cannons. Moreover, these 20 rocket launchers are scattered to prevent being served by others.

They also retreated to as far as possible, where it was almost the limit of the range, and at this distance, the accuracy of Wei's artillery was very poor, and of course, the accuracy of their rocket artillery was not very good, and everyone was almost just a random fight.

The super cannon of the Wei State is protected by a fortress, but the rocket artillery of the Hong army is violently exposed~ and in a state of safety and no protection. Because even if it is a random call, there is still a possibility of hitting, and this is just a matter of probability.

Once hit by such a large iron ball, whether it is a person or a device, there is absolutely no possibility of intact. Fortunately, the troops of the Eastern Front came up with a solution, which was to build an earthen wall up to one meter thick in front of the rocket artillery position.

For the Hongjun troops, where the sapper shovel is the standard configuration, this project is not difficult at all, and it can be built overnight.

In this way, the Keqiu killing troops can hide behind the earthen wall, exposing only one head and cannon muzzle to confront the enemy. The cannonballs launched by the black fire ~ medicine ~ are not too fast, and sometimes they can even capture their trajectory in the air with the flesh ~ eye.

However, even if the trajectory of the shell can be seen, the average person may not be able to react in time. looked up and saw the cannonballs flying in the air flying towards him, and then the whole person quickly dodged away, this is a bridge that can only be found in film and television works, and it is unlikely to succeed in reality.

After all, there is a limit to the speed of human reactions, and many times, the human body cannot keep up with the speed of the brain's thoughts. Even if the information seen by the eyes reaches the brain, the brain has already sent out instructions to dodge, but the muscles are still unable to complete the contraction action in such a short time.

However, the whole person can't dodge, and it can still be done by shrinking his head, and now with this super thick earthen wall, as long as he shrinks his head, the whole person can hide behind the earthen wall. Sometimes the soldiers even shrank their heads when they heard the sound of the cannon on the opposite side, and they didn't even look at the trajectory of the shells, which was safer.

Wei's cannonballs smashed on the earthen wall, and the energy attached to the cannonballs could be completely absorbed by the one-meter-thick earthen wall. Soldiers hiding behind dirt walls will not take any damage.

Since the construction of this earthen wall, the strength of both sides has returned to the same level. Everyone's attack power is about the same, and the accuracy of the Keqiu killing force is slightly worse, but it makes up for this disadvantage with twice the number.

As long as the soldiers of the Keqiu Killing Force reacted quickly, they would basically not suffer any damage. As a result, the war has entered a phase of stalemate again, but every day, the explosives ~ ammunition and shells on both sides are being consumed at a very fast rate.

It is true that the amount consumed by the Hong army is three or four times that of the Wei army, but they can be replenished continuously, while the Wei army's fire~ medicine and firearms are rabbit's tail that can't grow, and I don't know when they will all be gone.

Unlike the unfavorable offensive of the troops of the Central Front, the course of the troops of the Northern Front went surprisingly smoothly. After Cao Hong received his son's letter and Liu Hou's holy decree, he did not hesitate for long before choosing to surrender.

All this was expected by the General Staff, Liu Hou and his four strategists would have died long ago, and there was no other way to choose but to surrender to Cao Hong. Cao Pi wanted to kill him three or four times, but he had no way to think about it before, so he could only endure it all the time.

Now there is another choice in front of him, and it is still a broad road, so it is strange that he does not grasp it well. Another reason why he didn't have a choice was that his eldest son, Cao Fu, had already surrendered to Shu.

If this news is known to Cao Pi, there is no doubt that Cao Pi will inevitably kill his entire family. He also knew that if he didn't surrender to Shu, Shu would definitely reveal the news to Cao Pi, and at that time, there would be no need for the "200,000" Shu army outside the gate to attack the city, and Cao Pi would take off his head first.

In addition to facing the threat of death, what worries him the most is property. Treason is a big crime of killing the head and stealing the family, Cao Pi knew that Cao Fu was treasonous, not only would he kill their whole family, but he would definitely confiscate his own property. He didn't believe that Empress Dowager Bian would intercede for him this time and let Cao Pi return his property.

In other words, if he does not surrender, the property in his name will definitely not be saved. However, if he chooses to surrender now, then his possessions will be well preserved.

For this, he had no doubt that the little emperor of Shu would lie to him, because he already had the holy decree given to him by the little emperor of Shu in his hand, and this was already written in black and white. There is no joke in the king, the holy decree is not a child's play, once it is issued, it has legal effect.

With this holy decree, when the Shu army unifies the world in the future, all of his fields and houses will still belong to him, and he is not afraid of being invaded. This decree is really a good talisman, and its effect is better than the title deed.

This is the characteristic of Liu Hou's life and work, he gave you the benefits in advance, even if you haven't done anything yet, implement the benefits first, let you feel at ease, and let you do things well obediently.

Of course, Liu Hou is not a fool~ a fool, he will not have no precautions at all, if you accept the benefits and do nothing, in the end these benefits will definitely not fall into your hands, after all, this is real estate that cannot be taken away.

After thinking about it, Cao Hong knew that after he surrendered, there would be great benefits, and the only problem was that he was worried about the safety of his family who was still in Chang'an. If Cao Pi knew that he had committed treason, his family would undoubtedly be executed by Cao Pi as soon as possible.

The Chinese attach great importance to the matter of inheritance, and if the incense is cut off, it is a very serious matter. But Cao Hong obviously doesn't have that kind of worries, even if his family in Chang'an is killed, he still has an eldest son who is still in Shu, and he still has a bloodline, and there is no problem in passing on the lineage in the future.

Moreover, Chang'an's family is not necessarily in trouble, as long as he and the Shu army move fast enough, there is still a chance to rescue them before Cao Pi kills them.

First of all, Cao Hong sent his own soldiers back to Chang'an as quickly as possible, and secretly informed his family to hide quickly. As the saying goes, if you can hide for a while, you can't hide for a lifetime, and it is impossible for them to disappear from Cao Pi's field of vision forever, but it is still possible to hide temporarily so that Cao Pi can't find them in a short time.

As long as they can hide for a while, he can rush back to save them. In order to rescue his family as soon as possible, Cao Hong unusually cooperated with the march of the Northern Route Army, and he volunteered to personally lead 2,000 soldiers to open the way for the Shu army in front, and quickly marched all the way to Chang'an.