The rolling logs that rolled down from the east mountain almost filled the entire valley, and the Sima Jun who were crushed under the rolling logs were all turned into meat cakes, and there was no chance of survival.

However, it seems that it feels insufficient, and almost the same amount of rolling logs was cast on the Xishan side, and the rolling logs on both sides were piled up, almost two or three zhang high, completely sealing the valley.

Wang Jun is very satisfied with this effect, which is also due to the fact that he led the army to cut down a lot of big trees around before, and the effect of sealing the road with rolling logs is very good, and the road can be sealed tightly in an instant, and those rolling logs are pressed together horizontally and vertically, even if Sima Jun wants to move it, but it will not be possible in a short time.

What's more, there are also arranged crossbowmen on the mountain, as long as Sima Jun tries to approach or move this wooden wall, the crossbowmen on the mountain will shoot arrows randomly, and they will not be given a chance to move the rolling logs at all.

The target of this ambush is very clear, that is, Sima Jun's rear team, and Cao Liang gave this operation a code name, which is called "cutting off the snake's tail".

The special geographical location of Huyukou made this operation easy, and the state army slashed quickly and ruthlessly, so that Sima Jun had almost no defense, and was cut off in two in an instant, and he could not care about each other.

Now that the big snake of Sima Jun is stuck in the canyon of the Ruohang River at the mouth of Huyukou, it has become quite difficult to turn around, and if he wants to reconnect the front and back parts, Sima Jun must capture the mountains on both sides.

The Changshui Battalion and the Shooting Sound Battalion of the Bingzhou Army were already in full array, and the Changshui Battalion and the Shooting Sound Battalion were also divided into two parts, one part built a defensive position to block the rescue of the men and horses in the front of the Sima Army, and the other part launched an attack, cooperating with the infantry battalion and the Xiao Cavalry Battalion to besiege the rear of the Sima Army trapped in the position of the valley mouth.

The valley mouth of Huyukou is shaped like a trumpet, the bottom is narrow and the mouth is wide, there are high ground on both sides, and the Changshui battalion and the shooting sound battalion occupy the high ground position first, forming an encirclement of the rear team of Sima Army.

However, this encirclement is only a semi-encirclement, the position of the entire valley mouth is still open, in order to prevent the Sima army from escaping from the position of the valley mouth, Cao Liang arranged for the cavalry battalion and the infantry battalion to lie in ambush behind the mountain of Huyukou, and wait until the Sima army enters the valley to seal the mouth, about to kill out, cut off the retreat of the Sima army.

This way of making dumplings is the most simple and practical, Sima Jun three ways out of the army, easily trapped the snake tail of the Sima army in the valley, although in terms of troops, the state army has not yet reached the required number of encirclement and annihilation of the enemy, but because of the terrain, it is difficult for the Sima army to break through.

The battle of Changping between Qin and Zhao took place on this land, and the Qin general Bai Qi took advantage of the terrain here to trap 400,000 Zhao soldiers with fewer troops, and the Zhao army fought bloodily for more than 40 days, and the food was exhausted, and it failed to break through the siege of the Qin army.

Therefore, from the point of view of the art of war, it is not impossible to encircle more with less, and encircle the strong with weak, the most important thing is to pay attention to geographical conditions, and places like Huyukou were originally the best battlefield for ambushes.

Of course, the success or failure of making dumplings, the most important thing is how to seal it, if the seal is not good, the dumplings will not be exposed. Therefore, in the position of the seal, Cao Liang specially arranged the Xiao cavalry battalion to assist the infantry battalion in combat, the defense power of the infantry battalion is already one of the best, plus the Xiao cavalry battalion with strong attack power, Sima Jun wants to break through, the difficulty can be imagined.

However, Sima Jun obviously did not choose to break through in a hurry, but took the initiative to shrink his forces and build a defensive line in situ.

In the rear team to lead the army is Shangshu Wang Guan, Wang Guan and Sima Yi from the too close, Gao Pingling Incident, he acted as the leader of the army, seized Cao Xi's military power, as Sima's minions, after the reuse of Sima Yi, reappointed as Shangshu, this time with Sima Yi on the expedition, served as the position of logistics chief.

The state army launched a surprise attack at Huyukou, Wang Guan was quite calm, and did not panic because of the raid, of course, the main reason was that he had been ordered by Sima Yi.

Although there are a lot of people, the combat effectiveness is not strong, if you force a breakthrough at this time, in the face of the strong combat effectiveness of the state army, it is likely to be defeated.

Therefore, Wang Guan did not rush to break through, but ordered the grain wagons to be surrounded in a circle, and all the troops were shrunk to the defensive circle of the grain wagons, and heavy troops were built to build a defensive line to resist the attack of the state army.

I have to say that the strategy adopted by Wang Guan is extremely wise, if he forcibly leads the army to break through at this time, it will not be able to maintain the corresponding defensive formation at all, and in the face of the front and rear of the Bingzhou army, it is difficult for these teams with the logistics support army as the main body to withstand the strong impact of the Bingzhou army.

Especially in the position of the valley mouth, the state army is also equipped with such a strong cavalry as the Xiao cavalry battalion, if the Sima army wants to break through, it must face the Xiao cavalry camp head-on, and the rear team of infantry-based people and horses, if you want to step through the Xiao cavalry battalion, try to climb to the sky.

Although the turtle defense looks embarrassing, it is extremely practical, especially in the case of a defensive position composed of many grain and grass carts, which can play an obvious role in blocking the attack of the cavalry of the state army.

Of course, this effect is relatively limited, and the means of attacking the state army are not the same, if they are blocked by a certain offensive method, they will soon change the way of attacking, and it is difficult to resist for a longer time with the grain wagon alone.

However, Wang Guan obviously had sufficient psychological preparations, and in the face of the siege of the Bingzhou army from all sides, he also seemed calm and calm.

Sima Jun, on the other hand, was much more flustered, shrinking their lines and pushing as close together as they could, as if they felt that rubbing shoulders together would give them the greatest sense of security.

The attack of the Bingzhou army began almost at the same time as the encirclement was completed, and at the position of the valley mouth, Yanghu's infantry battalion lined up a huge infantry phalanx, led by pikemen, with a steady pace, calmly and forcefully, although the speed was not fast, but every step was sonorous and powerful, with a solemn atmosphere.

On the left and right flanks of the infantry phalanx, were the cavalry of the Xiao Cavalry Battalion, although they did not take up the task of the main attack this time, their powerful aura still made Sima Jun tremble.

The Changshui battalion in the east mountain and the shooting battalion in the west mountain rushed down the hillside at the same time, and they did not adopt a dense phalanx like the infantry battalion, but adopted a skirmisher attack formation, but they were scattered but not chaotic, and the murderous spirit was pressing.