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In the face of Di Bozhi's suggestion, Yao Xing was still hesitant.

At this time, the Qin soldiers were like a tide, constantly killing the Qiaoshan defense line.

Suddenly, rolling logs and rocks were poured down from the ramparts along with hot oil.

With the sound of screams, many Qin soldiers were scalded by the hot oil, and even scalded to death.

An even more terrifying scene ensued, as countless rockets descended from the ramparts, quickly setting fire to the plants and trees doused with hot oil.

The fire spread extremely quickly by the wind, disrupting the Qin army's formation at once.

Most of them turned and ran to avoid the fire dragons that were spreading around them from under the barriers.

The raging fire caused great casualties to the Qin army, and the entire Qiao Mountain was plunged into a cloud of smoke, and it was impossible to see the appearance of people face to face.

The fire also ignited the bushes and trees on the side, and the wet branches and trees burned, and the smoke became even more smoky, and the soldiers on both sides could not help coughing.

Seeing this scene, Yao Xing had no choice but to give the order to retreat.

After stopping the attack, Yao Xing was worried that the Hexi army would take advantage of the situation to sneak attack, so he ordered the army to retreat for forty miles.

The fire burned for a long time, and when it got dark, the surroundings of Qiao Shan were bright.

The raging fire ignited more shrubs and trees around it, and it continued to burn.

originally thought that there would be bloody hand-to-hand combat, but he didn't want to repel the Qin army in such a way, which really surprised Wei Shuo.

In the first battle of Qiaoshan, thanks to the proper use of tactics, the losses of the Hexi Army were not large, and the total number of people before and after was only 1,000, but it achieved the result of destroying nearly 10,000 enemies.

However, although the Qin army retreated, it did not mean that the war was over.

Before Yao Ping is rescued, Yao Xing may not retreat easily, but the battlefield will change places next.

……

After the Qin soldiers retreated, Wei Shuo ordered the troops to rest.

Next, the scout sent back an urgent report, and when he opened it, he realized that Yao Xing had led his army to cross the Fen River westward.

I didn't dare to slack off at the moment, and hurriedly invited Cui Hao, Zhang Teng and others to come over to discuss countermeasures.

Late at night, the Qiaoshan Heights are silent, and the cool breeze hits.

In the camp of the Hexi Army, except for the soldiers on patrol, there were few people.

Only the sun and moon battle flags fluttering high, waving in the wind, making a crackling sound, should flow slowly with the Fenshui in the west.

In the marshal's tent, the candlelight flickered and the figures swayed.

Wei Shuo, Cui Hao, Zhang Teng, and Jiang Ji were chatting about the recent changes in the military situation around the candlestick.

"Bo Yuan, do you think Yao Xing will attack Tiandu when he leads his army west?"

Since receiving the news that Qin soldiers were going west, Wei Shuo guessed that Yao Xing wanted to go north from the west bank to find a way to rescue Chaibi, and Tiandu bore the brunt.

Tiandu is located on the west bank of Fenshui, across the river from Chaibi, and there is a pontoon bridge in the middle to figure it out.

As long as Tiandu can be occupied, Yao Xing is expected to get in touch with Yao Ping and possibly respond to the retreat of Chaibi's army.

"No!" Cui Hao was very sure.

"Why?"

"Tiandu is the only pass on the west coast that connects to Chaibi, will Yao Xing take the initiative to give up?"

"It's rare that he doesn't want to save Chaibi's army of 20,000?"

"What the lord said is biased, Tiandu is not the only one, but the closest West Bank stronghold to Chaibi."

"If Yao Xing is willing to run more, he can bypass Tiandu and continue north, and he can also build a pontoon bridge to cross the Fen River east."

"Bo Yuan means that the Qin army will make a detour north of Chaibi?"

"Exactly!"

"The danger of Tiandu is no less than that of Qiao Shan, Yao Xing has already suffered a big loss in Qiao Shan, how can he continue to hit the south wall?"

"It's better to bypass Tiandu and build a bridge to cross east in the upper reaches of Fenshui, so that the Qin army will go around to the north of Chaibi."

"At that time, the two enemies will form an echo, and then attack from the north and south with superior forces, and our army's defense line will be in danger!"

"Shhh I see, I don't know if Bo Yuan has a countermeasure? ”

"The main business is worried, just a little trick is enough to break the enemy."

Seeing Cui Hao's confident look, Wei Shuo was relieved.

……

The water surface of the Fen River is as wide as 100 zhang, and it is almost impossible to cross the river without boats and pontoon bridges.

When Yao Xing commanded an army of nearly 40,000 people to bypass Tiandu and arrive at the upper reaches of the Fen River, he couldn't help but worry when he looked at the turbulent Fen River.

In ancient times, due to the lack of necessary tools and materials, building roads and bridges was never easy, even a simple pontoon bridge was not easy.

First of all, it should be to find a boat to send a few craftsmen and people across the other bank, and pull a rope as a fix.

A large number of boats were then fixed to ropes as supports, and wooden planks were laid on the boats to facilitate the passage of people and vehicles.

Finally, use a few more ropes to strengthen the tension, and after fixing, you can pass people.

Of course, this is just a brief description of the construction process.

In fact, the intermediate procedure is very complicated, and the slightest carelessness will cause the bridge to be destroyed and people will die.

In peacetime, it is better, but during the outbreak of war, there will be enemy covert destruction, so the pontoon bridge is not so easy to build.

Yao Xing soon realized the difficulty of building a bridge, on the one hand, it was difficult to build a pontoon bridge due to the high wind and waves of the Fen River.

On the other side, the Hexi Army on the other side is too bad and always secretly sabotage.

Due to the Fenshui barrier, Yao Xing only had a few small boats and could not send a large army to the opposite shore.

So much so that as soon as the craftsmen and people in charge of the lead arrived on the other side, they were easily captured by the Hexi army, which was waiting for them.

Before and after, the Later Qin lost a total of dozens of craftsmen and hundreds of ordinary people.

When Yao Xing was furious in the face of the failure to build a pontoon bridge, Wei Shuo had already led the cavalry to cross the river overnight and lurked on the opposite bank.

At this time, the Qin army was all attracted by the construction of the pontoon bridge, and was a little negligent for a while, but Wei Shuo seized the opportunity and successfully attacked the Qin army camp.

Suddenly attacked, the Later Qin army panicked and rushed to meet the battle, and the army was repulsed by the Hexi army, with thousands of dead and countless wounded.

The sneak attack was successful, Wei Shuo was overjoyed, and once again led the army to cross the river from Tiandu back to the east bank, so angry that Yao Xing wanted to scold his mother.

Because of the Fenshui barrier, before the pontoon bridge was erected, Wei Shuo was not worried about being attacked by the Qin army at all.

On the contrary, the Hexi Army could pass through the Tiandu pontoon bridge, constantly going back and forth between the two banks, and frequently launched sneak attacks on the Qin army.

Next, in order to get in touch with Yao Ping, Yao Xing tried to cross the river by pontoon bridge several times, but unfortunately they were all destroyed by the Hexi army.

At this point, the two Qin armies of Yao Xing and Yao Ping were isolated from each other inside and outside, and they could only lose their troops in vain and their morale was depressed.

Due to the delay in breaking through the Hexi Army's defensive line, Yao Xing was furious.

Later, he accepted the advice of his subordinates and decided to adopt the tactics of fire attack.

He ordered craftsmen to build a raft overnight, light a fire and take advantage of the wind to go down the river, trying to burn the Tiandu pontoon bridge to cut off the path of the Hexi army to attack the Qin army.

If the tactics of fire attack succeeded, it would be the second "Battle of Red Cliffs".

Who knew that Wei Shuo and Cui Hao saw through Yao Xing's trick in advance, and ordered the soldiers to make several big iron hooks and hook all the rafts of the Qin army.

At this point, on the Qin army's side, the fire attack plan also failed completely.

At the same time, time passed rapidly, and reinforcements from Hexi continued to arrive from the rear.

The Chaibi encirclement is also shrinking day by day, and the death toll of the Qin army is rising.

Yao Ping's department is even more desperate to run out of ammunition and food, although Yao Ping knows very well that the current Chaibi defenders are more auspicious and less auspicious, but they still have to do the last fight.

To this end, he took two strategies.

The best strategy was to use a force to maneuver with the Beihe West Army in the south, and most of the troops were assembled, using the dark night as a cover to break through to the northwest.

This breakthrough Yao Ping echoed the main force of the Qin army, and even he hoped that Yao Xing could successfully build a pontoon bridge on the west bank of the Fen River in order to meet the breakthrough of the army.

After Yao Xing learned the news, although he wanted to rush to Yao Ping's aid, he failed to cross the river several times to build a pontoon bridge.

When he thought that his strength was inferior to that of the Hexi Army, he could only order the soldiers to light a bonfire on the bank of the Fen River to show Yao Ping the direction and beat gongs and drums to boost morale.

The Hexi Army had expected that the Chaibi defenders would be desperate, how could they let Yao Ping's intentions succeed?

Wei Shuo immediately ordered that the main force of the army quickly assemble in the direction of Yaoping's breakthrough, and stubbornly blocked the main communication route to the outside world, separating the two Qin armies from both sides of the Fenshui.

Yao Xing could only sit on the west bank of the Fen River, watching the Chaibi Qin army being swallowed up by the Hexi army little by little.

And Yao Ping always hoped that Yao Xing on the west bank of the river could build a pontoon bridge, but he couldn't build a pontoon bridge.

Eventually, the breakout plan came to naught.

Seeing that the upper strategy did not work, Yao Ping turned to the lower strategy.

However, it was this move that completely buried the 20,000 Qin troops in Chaibi, and also made Yao Xing have to withdraw to Guanzhong with hatred.