Lishi Fortress belongs to Xihe County. If we trace its history, today's documents can be traced back to the Warring States Period, which was an important pass for Qin to attack Wei and Zhao. This time, when Ye Zhao wanted to use troops to Bingzhou, Lishi Fortress was naturally the first to bear the brunt.

As an old opponent, although there have not been many direct conflicts between Yuan Shao and Ye Zhao in the past few years, since Ye Zhao's troops left Guanzhong, Yuan Shao attached great importance to Lishi Fortress. Not only did he station 6,000 elite soldiers, he also sent a general to guard the place.

This general is named Guo Yuan. If you want to talk about his origin, it is not inferior. The Guo family in Pei Country sounds a bit unfamiliar, but if you talk about his uncle, he is a famous figure, which is Yingchuan Zhong Yao. At this time, he emphasizes the equality of the family, especially in the scholar class. This is very particular. How could it be ordinary for a family that can marry Zhong Yao's sister?

Guo Yuan did have some ability. When he learned that Ye Zhao had entered Bingzhou in Hetao's troops, the senior officials wanted to separate half of Guo Yuan's troops and took away. After hearing the news, Guo Yuan personally found the senior officials and analyzed carefully: "Since Ye Zhao planned to Bingzhou, how could he only take all the troops? Moreover, Hetao was remote and the transportation of food and grass was unsustainable. It must be a void soldier. Ye Zhao might have sent troops secretly, and waited for the general to be led by this army, and then suddenly attacked Lishi Fortress. From then on, he attacked Bingzhou. If Lishi Fortress is lost, Jinyang will be in danger!"

Although the senior officials felt that the military situation was urgent, they also knew that Guo Yuan was right, so they did not move the troops of Lishi Fortress and led other troops to fight Xu Rong.

After the high-ranking officials led their troops to leave, Guo Yuan began to deploy defenses. There were countless secret posts around Lishi Fortress, and many traps were dug. No matter how Ye Zhao covered up, once the troops and horses in Guanzhong appeared around Lishi Fortress, they would have nowhere to hide.

"It seems that Guo Yuan has some skills!" Outside Lishi Fortress, Ye Zhao saw that he could not help but smiled at Xi Zhicai, who was following the army: "According to the news from the spy before, Yuan Shao has deployed 6,000 heavy troops here, and Guo Yuan is so cautious, it seems that he can only attack one way."

Xi Zhicai had seen the terrain of Lishi Fortress during the day and nodded after hearing this, saying, "Looking at the terrain, this place is indeed easy to defend and difficult to attack, and the terrain is tortuous. Our army's new types of sky-bombing vehicles, city-breaking crossbows and other heavy siege equipment may be difficult to use."

The new siege equipment in Ye Zhao's army is extremely powerful, but the size of these siege weapons is also extremely bulky. Like Tianshui, the terrain of Mei County is wide and it is natural to use, but dangerous thresholds like Lishi Fortress are difficult to use.

As for luring the enemy out of the city, it is impossible. Guo Yuan is not an idiot. He has made so many preparations before, and obviously he just made up his mind to defend the city. How could he go out of the city to fight at this time?

"And the mountains on both sides are equally dangerous, so our flying boat cannot drive up." Ye Zhao thought for a while and frowned. This Lishi Fortress seems to be really difficult to deal with now. If you attack hard, the losses will be huge. The flying boat cannot accurately choose the footing point. There will be errors and needs to be continuously adjusted. The Lishi Fortress is built between the two mountains. This terrain is exactly where the flying boat cannot reach.

"It's not completely unbreakable!" Xi Zhicai said.

"Oh? What's the trick of Zhicai?" Ye Zhao smiled at Xi Zhicai.

"Have you ever noticed the cliffs on both sides of Lishi Fortress?" Xi Zhicai smiled and said, "You can use flying boats to send troops to the top of the mountain, and from the tops of both sides to see the layout of Lishi Fortress clearly, but you can also shoot arrows in the fortress at a high position."

Ye Zhao nodded. He used this strategy when he attacked Luo County in Yizhou. The effect was good. He nodded and agreed. Now the main force of the flying boat is still parked in Hetao. Ye Zhao only followed eight flying boats to detect the enemy situation and to use them as surprises when necessary. There is no problem in sending people to the mountain.

There was nothing to say all night. The next morning, Ye Zhao led his army to the Lishi Fortress to prepare for forcibly siege the city. Guo Yuan also ordered his troops to fight. Before the war between the two sides had begun, the clusters of arrows shot from the mountains on both sides fell into the fortress, which did cause a lot of trouble for Guo Yuan. Ye Zhao took the opportunity to attack the city, and Wei Yan's army carried the ladder and launched an attack on the city wall.

This ladder is just an ordinary siege ladder, and the ladder cannot be placed here. At the same time, a series of three-stone crossbows were scattered in the back formation and began to shoot arrows on the city wall.

While Guo Yuan ordered people to connect shields to block the clusters of arrows falling from the sky, he ordered the archers to counterattack. The three-stone crossbow could shoot 200 steps, but in this narrow area, the ultra-long range could not be exerted. On the battlefield with limited territory, Yuan Shao's archers could also shoot the clusters of arrows.

Without advanced siege equipment, there are only a few routines for regular siege, and Lishi Fortress is an easy-to-defense and difficult-to-attack place. Even Ye Zhao sent out his vine armored soldiers, he could be pushed down by Guo Yuan before attacking the city wall.

After a strong attack for one day, he failed to break through the Lishi Fortress. Even Ye Zhao could only withdraw his troops. This place was too narrow and was not suitable for large army combat. The Lishi Fortress had sufficient troops and it was not possible to use up the opponent's troops in a short while.

This meaningless battle of fuel added was what Ye Zhao didn't want to fight the most. He immediately withdrew his troops and did not fight again.

"Lord, I will be willing to lead the Qijia Army to rush again at the end of tomorrow!" Wei Yan returned to the coach's tent with a dirt face and clasped his fists at Ye Zhao.

Before, he fell directly from the city wall. If it weren't for the corpse cushion below, even if he didn't die, he would have to cultivate for a long time. He always felt that he could only break the city by just a little bit, but he couldn't get in for a day after fighting, and he felt quite unwilling.

Ye Zhao shook his head when he heard this: "Then Guo Yuan was deliberately showing the enemy as weak and trying to lure us to continue to attack, so as to consume our soldiers. My soldiers are much more expensive than Yuan Shao's soldiers. I cannot die in this meaningless battle."

"But the terrain of Lishi Fortress is narrow, and our army's catapult can't be opened here at all!" Wei Yan grabbed his head and said distressedly.

"There will always be a solution." Ye Zhao sat on a rattan chair, looking at the direction of the Lishi Fortress, frowned and pondered at the strategy of breaking the enemy. The cliffs on both sides shot arrows. Although it seemed to have some effect now, it was not significant. When he was withdrawing troops, he had already seen Guo Yuan commanding people to set up a baffle above the city wall. The baffle was pulled up, making it more difficult to attack again.

Unfortunately, the Special Forces Camp sent it to Li Ru. Otherwise, with the special forces camp's ability, they could have taken down the Lishi Fortress.

Thinking of this, Ye Zhao seemed to have thought of something and turned his head and said, "Go and call the people from the Shengong Camp!"

"Here!"

Soon, the master craftsman of the Divine Works Camp came in and bowed to Ye Zhao.

"If I want to dig an authentic tunnel here and go straight to the Lishi Fortress, how many days will it take?" Ye Zhao looked at the big craftsman and said that there were diggers who specialized in digging authentic tunnels in the Shengong Camp.

"Go back to the lord, the soil here is dry and hard, and it is not suitable for excavation. Moreover, although the city wall of Lishi Fortress is not high, it should be quite deep in the ground and is not suitable for excavation." The master of the Shengong Camp bowed and said.

"If you can't escape from the ground, then there's only flying sky!" Ye Zhao suddenly thought of Guo Yuan erecting a baffle on the city wall, and suddenly smiled: "Guo Yuan is in a cocoon this time!"

"Did the lord have a plan?" Wei Yan looked at Ye Zhao and said.

"Yes, do you remember the hanging umbrella for self-rescue on the flying boat?" Ye Zhao smiled at the people.

"Lord is wise!" Xi Zhicai's eyes lit up when he heard this, and he nodded and smiled.

"It's just above the eight flying boats, and they carry only three hundred hanging umbrellas." said the master of Shengong Camp.

"Then let's tear off the two flying boats, make more, and make up for me a total of 500!" Ye Zhao looked at the master of the Shengong Camp and said, "The material of the hanging umbrella is similar to the airbag of the flying boat. It is similar to a parachute, but it is different. In a hurry, it is indeed difficult to replace it with other materials.

"Here!" said the general of the Shengong Camp.

"Lord, I will ask for a fight!" Wei Yan was not stupid. When Guo Yuan raised an artificial roof on the city wall to resist the clusters of arrows from both sides, he couldn't help laughing.

"You can parachute?" Ye Zhao looked at Wei Yan in surprise. This parachute was not enough to be opened in the air. It also needed to reach the footing point accurately. Moreover, the terrain was narrow, so it was necessary to ensure that the soldiers would not be entangled with each other.

"The lord wants to underestimate the last general. The last general has been under General Guan for three months." Wei Yan raised his chest and said proudly.

"Okay!" Ye Zhao nodded and said to Wei Yan: "I will give you five hundred vine armored soldiers. In three days, as long as you can help me open the city gate, I will remember your first merit in this battle!"

"Don't worry, lord, if you can't break through the city gate, come and see you!" Wei Yan agreed excitedly.

That night, the Shengong Battalion followed the military craftsmen to build two hundred hanging umbrellas overnight, and Wei Yan and the 500 vine armored soldiers selected were sent to the top of the mountain overnight.

The next morning, when Guo Yuan and the soldiers guarding the city saw the five hundred vine armored troops falling from the sky, they were all confused. It would be fine if they shot arrows from above, but why did they throw people down this time?

After Wei Yan landed on the ground, without saying a word, he relied on his vine armor and waved his sword to break the ceiling and jumped onto the city wall. He held a single sword in his hands, but he saw the light of the sword. There was no general wherever he passed. Five hundred vine armored soldiers who followed him joined the battlefield one after another. These vine armored soldiers were invulnerable to swords and guns. The reinforcements guarding the city were killed and retreated step by step. Wei Yan gathered more than a dozen vine armored soldiers to the city and wanted to open the city gate. Guo Yuan was reluctant to let him go when he saw this. He roared and stabbed Wei Yan at the door with a gun.

"Good boy, I'm very brave!" Wei Yan narrowly avoided his cheek, scolded, turned his head and said to everyone: "When you open the city, I'll kill this thief!"

After saying that, he ignored everyone and took a knife and went up.
Chapter completed!