Although Sima Shi was suspicious, but he attacked for three days in a row, with little success, and naturally he also wavered in his combat strategy, and Sima Shi believed that only by using a strong offensive posture against the defending enemy at Shimen Pass would inevitably break down its defense and take Shimen Pass.

But in fact, Sima Shi obviously underestimated the command ability of the enemy defenders and the fighting spirit of the enemy's tenacious fighting, and countless attacks were fruitless, which made Sima Shi's face a little unbearable, and he couldn't even take a small stone gate pass, so how could he march into Shangdang, conquer Jinyang, and quell the rebellion in Bingzhou?

Sima Shi finally accepted Zhong Hui's suggestion and suspended the military operation for tonight, and when Sima Jun retreated like a tide, the night finally ushered in a quiet moment.

Although it is said that Sima Jun is the rotation of the attack, but in three days launched countless attacks in a row, Sima Jun is also very tired, originally thought that tonight to continue the night battle, those who are the turn to attack Sima Jun's team can not help but look bitter, fortunately, the latest order is to suspend the attack, which made the soldiers of Sima Army slightly relieved, this time can finally sleep.

Sima Shi was also extremely tired, although he vowed to take Shimen Pass before resting, but in the end it was obviously in vain, he arranged for Chen Qian to guard the front line, if he found any changes, he needed to inform him.

The retreat of the Sima army also made the Bingzhou army, which had been under pressure, finally usher in a moment of respite.

This point is particularly important for Du Pre, who had communicated with Cao Liang before the war, and Du Pre needed to hold on for three days before he could give up Shimen Pass.

Now that the three-day period has expired, it is the time when the Bingzhou army is preparing to retreat, but Sima Shi has been constantly launching offensives, making Du Yu's retreat a "difficult thing".

Although Du Yu did not stay up for three days like Sima Shi, but the continuous battle made him also exhausted, if he took the initiative to withdraw from Shimen Pass at this moment, he would inevitably be pursued by Sima Jun's madness, and it was difficult for the Bingzhou army, which had been fighting continuously for three days and nights, to escape from Sima Jun's pursuit.

This withdrawal is also a science!

Although the Sima army stopped the attack tonight, it does not mean that the Bingzhou army can retreat without worry, the Sima army will definitely send people to monitor the movements of the Bingzhou army, once it is found that the Bingzhou army has withdrawn from Shimen Pass, then they will definitely launch a crazy pursuit.

And once the danger of Shimen Pass is lost, and the state army is pursued on the way to retreat, the loss will be even more heavy than guarding Shimen Pass.

In order to hold Shimen Pass, the state army has already paid a lot of casualties, nearly one-third of the number of people killed, if they are allowed to be attacked by the enemy in the retreat, then there are very few people who escape alive.

How to withdraw the army is the safest, Du thought about it for a long time, and finally came up with a plan.

He ordered dozens of Sima Jun's prisoners to be brought up, these prisoners of war were captured by the Bingzhou army when they had no time to retreat in the hand-to-hand combat between the two sides, these people were more or less wounded, some were crutched on one leg, some were hanging their arms, all of them looked frightened, I don't know what Du Pre brought them over in the middle of the night, what is his intention?

In any case, at this time, the commander-in-chief of the Bingzhou army brought them to the frontline position, and these prisoners were naturally panicked, looking at each other, but guessing the next move of the Bingzhou army.

Du Yu ordered people to find dozens of war drums, so that each person had one.

These captives were even more stunned, they really couldn't imagine what Du Zhen was going to do?

Du pre-ordered the prisoners to be blindfolded, and then each of them was given a drumstick, and they were told to beat the drum desperately, and if anyone dared to slack off, Du pre-claimed that they would be beheaded first.

Coming to beat the drums in the middle of the night? Not only were these prisoners of war stunned, but even the surrounding soldiers were confused, and they didn't know what Du Xuan's intention was?

War drums are indispensable in the army, in ancient times, the high and low pitch of the drum and the density of the drum beat were used to command the army. The sound of drums also has the effect of boosting morale, but this midnight without sleeping to beat the drums is deeply inexplicable.

Although these captives did not understand Du Yu's intentions, none of them dared to resist, because they knew the consequences of refusal, not to mention that they had no reason to refuse, they just beat the drum and did not let them die.

The chaotic drum sounded, which naturally also alarmed Chen Qian, who was patrolling outside the pass, at this moment, it was about the third watch of Tianjiao, and the state army suddenly beat the drum, is it going to attack?

Chen Qian quickly denied this idea, if the state army sneaked up in the middle of the night, it should be quietly dispatched, how could it be a big fanfare?

So Chen Qian sent a group of men and horses to Shimen Pass to test the situation, but they were shot by random arrows and forced to turn back.

The chaotic drum beat still kept ringing, and even Sima Shi, who had just fallen asleep, was awakened, and he ordered someone to find out what the situation was, but the result was unknown, and no one could figure out what the drum beating in the middle of the night meant by the Bingzhou army, unless it was the main general of the Bingzhou army.

There is no consistent drum beat, except that it is noisy, listening to this kind of drum sound is upsetting, so someone proposed that the move of the state army is purely to disturb the rest of the Sima army, and the battle for days has made the Sima army sleepy, and if it is tossed in the middle of the night, the quality of Sima Jun's sleep will be greatly reduced, and tomorrow's attack will be listless.

Perhaps this is the real intention of the Bingzhou army beating drums in the middle of the night, and it really has no other meaning than disgusting people.

After figuring out the intentions of the Bingzhou army, Sima Shi fell asleep again, and in order not to be disturbed by this noise, he also deliberately stuffed two strips of cloth in his ears.

No one of Sima Jun's men paid any more attention to the drum, although the noise was still quite torturous.

At this time, Du Yu finally issued an order, and all the men and horses of the shooting battalion withdrew from Shimen Pass and retreated to the north, leaving no one behind.

As for the dozens of prisoners of war who were blindfolded, they were still beating the war drums there, and each of them had a sharp spear on their backs, and they were beating the drums desperately, even if their arms were too sleepy to lift up, they had to continue to beat hard, for fear that if they stopped, they would be stabbed to death by the spears in their backs.

The soldiers guarding the drummers were the last to evacuate, and they did not forget to threaten them a few more words before leaving.

Until dawn, the drums were beating intermittently and incessantly.