The Zhonglei Camp was the main attack mission this time, led by Zhonglei General Huangfu Jian, who was personally led by the team. However, this time, the attack was no longer just the front troops, but the entire force of Zhonglei Camp was invested, with a total of more than 15,000 people. It can be said that all the troops were dispatched, divided into five groups, and launched a comprehensive attack on Guiniupo.

Huangfu Jian personally led the front troops to attack the main position of the Shu army in Guiniupo. Since the Shu army in Guiniupo was not as thin as the Yingzui Cliff, it adopted a defense system of multiple stairs and large depths, with trenches and fortresses in a row, it was not realistic for the Wei army to take advantage of the heavy fog to attack Guiniupo in one breath, so Liu Jing's goal was still to lock on the front positions in Guiniupo. As long as these front positions were taken down, it would naturally be of great benefit to the Wei army's subsequent advancement.

Under Huangfu Jian's leadership, the Wei army trotted towards the target and soon entered the mountain climbing path. At this time, it was not too far from the target position. Huangfu Jian ordered the soldiers of Zhonglei Camp to slow down and minimize noise so as to prevent the defenders from discovering that the Wei army had approached their position at this moment. Only after reaching a close enough distance will the Wei army start a strong attack mode.

Of course, this attack was completely different from the last time when he hit the Hawkeye Cliff. After all, the Shu army did not have much defense at that time, and no one would believe that the Wei army would launch an attack under such harsh climate conditions. The temporary negligence naturally led to irreparable consequences.

Now that the Shu army suffered such a huge loss, they naturally paid enough tuition fees. Such negligence will definitely not happen again. However, Huangfu Jian had nothing to worry about. After all, this heavy fog is the best invisibility cloak. The Wei army hid in the heavy fog. Even if the Shu army was prepared for a long time, it would be impossible to guard against!

The road up the mountain was also extremely steep and winding. When the Wei army arrived here, they just climbed carefully along the mountain, for fear of making noises and being heard by the Shu army on the mountain.

In the thick fog, although the eyes cannot see objects, it does not hinder the discernment of the position of the hearing sound. Under normal circumstances, if a person's vision is blocked, other senses will become sharper. For example, hearing, you may only hear very close sounds, but you can hear very far at this time.

I believe that the Shu army will also arrange some soldiers with excellent hearing to come specifically to find out the movements of the Wei army. So at this time, the closer the Shu army is to the position, the more cautious the Wei army will be, and not make too loud noises as much as possible, so as not to be discovered by the Shu army.

At this moment, suddenly, a few whistles sounded in the thick fog, crisp and loud, long and short, long and gentle, long and gentle, lingering sounds, as beautiful as larks, short and short sounds, rapid and dull, and abruptly, closing very abruptly.

Huangfu Jian's face suddenly changed. In the quiet fog, there was a whistle around him, and it was obvious that it was an extremely abnormal thing, especially the whistle, which was three long and two short, which was clearly a signal sound that someone deliberately issued.

The Wei soldiers looked towards the source of the sound in unison, and saw a figure flashing quickly in the thick fog. Huangfu Jian was about to send someone to chase him, but he heard the sound of arrows breaking through the air in front of him.

"Damn it!" Huangfu Jian roared and ordered loudly: "Lying down!"

Before he could finish his words, the arrows were already swishing over the tassels on his helmet. Huangfu Jian couldn't help but feel cold sweat. If he hadn't had his quick reaction, he would have been at the Ghost Gate at this time.

Some of the Wei soldiers behind him were not so lucky. Although Huangfu Jian had ordered to lie down, some soldiers were still half a beat slower and were penetrated by arrows and died on the spot.

The Wei soldiers who had crawled on the ground were finally in danger, but the arrows in front were still shot up, so they couldn't even raise their heads, let alone continue to attack forward.

The Shu army's arrows were able to strike so accurately, which was obviously inseparable from the whistles just now. Huangfu Jian realized at this time that the Shu army had ambushed some sentries halfway through the way. After seeing the traces of the Wei army, he immediately blew the whistle to warn. The length of the whistle must have a special meaning, so as to determine the position and distance of the Wei army.

The archers of the Shu army on the other side were already on high alert. Once the whistle was heard, the archers would immediately shoot arrows and block the Wei army.

Once the sentry blew the whistle, their locations would be exposed. Theirs would use the retreat route they had mastered earlier to evacuate quickly. In such a foggy weather, they could disappear without a trace in just three turns. Even if the Wei army wanted to chase them, they would be biting a hedgehog - nowhere to go.

Of course, these sentries were not all for avoiding the Wei army. Their warning position was near their hiding place. At this time, the archers of the Shu army could not see the target at all, and could only attack with the location marked by the whistle. If they continued to stay in place, they would easily be shot by their own arrows.

Faced with flying arrows, Huangfu Jian could only order a retreat. Once the Shu army found them attacking from this route, the offensive route would be completely abolished. No matter how powerful the Wei army was, it would not be possible to launch a charge in the rain of arrows. At this time, Huangfu Jian could only re-plan the offensive route.

But after a few steps, another whistle came, and then the rain of arrows poured down, and the Wei army could only retreat.

Huangfu Jian did not expect that the Shu army would use this method to crack the fog war. They only needed to send a small number of soldiers to lurk on some of the necessary roads to go up the mountain. Once the enemy situation was discovered, they would blow the whistle and warn and command the archers to launch an attack.

No matter how the Wei army changed its path, as long as the sentries were still hidden in front of it, the Wei army would not be able to approach the Shu army's position.

The only way now is to clear the sentries lurking in the thick fog, but these sentries slipped like loaches. As long as they blew the whistle, they would immediately move. Sometimes they were clearly in front of their eyes, but in the blink of an eye, they disappeared.

It is even harder to catch these sentries in the fog than climbing to the sky. The fog itself is a double-edged sword. If it is done well, it can hurt the enemy. Maybe it will hurt yourself.
Chapter completed!