Therefore, Wei Jing suggested that the road should be opened with a stone-throwing truck immediately, fill the moat, and speed up the attack even if the river overflowed, otherwise, once the people through the sea seized Shanxian Mansion and threatened Songyang Pass from behind, there would be nothing to do in Yunnan, and all the previous ideas would be in vain, wouldn't this person be a big loss.

Hearing this, Li Yi had no choice but to nod in agreement. According to the existing topography, once the moat overflows in large quantities, the Yunnan troops will bear the brunt. The gentle slope in front of the Songyang Pass determined that the water would definitely flow down, which would bring great difficulties to the marching and deployment of the Yunnan side.

Therefore, Li Yi decided not to launch an offensive today, but arranged for the engineering battalion to urgently dig a canal so that the flowing water could be diverted to other places to facilitate the offensive operations of the army.

After half a day and a night of continuous excavation, early the next morning, a canal was basically formed. This aqueduct intercepted in front of Songyang Pass, diverting the water to the foot of the mountain on the side and going down the river, leaving a relatively wide offensive passage, which was enough to meet the passage of the Ma Bu army.

Li Yi immediately ordered the catapult to attack. With Wei Jing's order, more than a dozen stone-throwing trucks threw stones one after another, although the accuracy was not very high, but after constantly adjusting the direction and distance, more and more stones fell into the moat. About two hours later, the moat in front of Songyang Pass was already full of stones, and the river overflowed into the canal that had been dug long ago, and it did not affect the Yunnan troops in front of them at all.

By this time, the moat near the gate had almost been filled, and the overflow of the moat was gradually decreasing, and it seemed that the measures had paid off. The next step is to clear the rocks near the moat and unleash the deadliest impact with the rushing cart.

Jian Zheng arranged the cavalry team in the position of attacking, and the infantry followed closely behind and made preparations. Under Wei Jing's command, two huge rushing vehicles began to move forward, approaching the city gate step by step.

Seeing the Yunnan rush approaching the moat little by little, although the enemy troops in the city didn't know what this guy was, the powerful bed crossbow had already begun to fire. Two or three meters long crossbow arrows constantly swept left and right of the rushing car, and the sharp whistling sound came and went, which made people tremble to watch.

At this time, a long crossbow arrow hit the rear edge of the roof of the rushing car, and the striking crossbow slammed and stopped at once, and the iron sheet and fireproof cowhide of the roof were also passed through instantly, and the entire long crossbow arrow was nailed to the roof of the rushing car.

But after a brief pause, the van started again, moving little by little to the moat, and the soldiers inside the van began to clear the scattered rocks around it. And the other rushing car also experienced countless long crossbow arrows and arrows, and luckily rushed to the moat. At this time, the bed crossbow was no longer able to exert its power, and the enemy troops in the city began to attack the hedge car with a dense rain of arrows and arrows, but the sturdy iron shell of the rush car did not suffer any damage at all, and all the arrows fell around the rush car.

The first rushing soldier, under the protection of the rushing car, cleared the stones in the moat, filled the road in the river as much as possible, and then pushed the rushing car to the opposite bank of the moat with difficulty.

The enemy troops on the city wall have begun to panic, when the rushing car is close to the city gate hole, the chaotic boulders smashed into the rushing car, with the sound of the impact of 'bang bang bang', countless stones smashed on the rushing car, although it affected the speed of the rushing car, so that the roof of the rushing car was obviously deformed and damaged, but still did not stop the advance of the rushing car. The enemy began to dump burning oil bottles downward, and the surrounding barrier of the rushing car still withstood the severe test. Soon, the first rushing car burst into the city gate cave, causing a cheer in the team, and Li Yi also breathed a long sigh of relief.

Next, the soldiers in the car opened the front guard and began to hit the city gate with the giant wood in the car. But after more than half an hour, Li Yi observed with a telescope that although the city gate was shattered by the impact of the giant tree, it could not be opened smoothly.

After a closer look, it was found that the inside of the city gate was actually full of boulders and earth, which was equivalent to the entire city gate cave had become a solid body, and even if the city gate was broken, it would not be possible to pass through here.

At this time, the enemy army above the city gate began to throw huge stones at the entrance of the city gate, trying to trap the Yunnan soldiers who entered the city gate cave in the city gate cave, if these thirty warriors could not advance or retreat, they would undoubtedly never be able to get out. Li Yi immediately ordered the gong and drum of the retreating troops to be sounded, and summoned two rushing cars to return to the camp.

After another arduous trek, the two vans finally returned to the camp in a state of disarray. Although many soldiers were injured, there was no loss of personnel, which also gave Li Yi more confidence in the hedging car.

Li Yi personally comforted all the soldiers who operated the rushing trucks, and asked them to pull down the two rushing vehicles to reinforce and repair them. The whole army was ordered to rest and recuperate on the spot and do a good job of protection and vigilance. Then he summoned Jian Zheng, Wei Jing and others to the tent to discuss the next move.

Wei Jing spoke first: "This Zheng Lian seems to know the way to defend the city, and he has already thought of all the siege methods we have thought of. The city gate cave is blocked with boulders and mud, which has been heard before, and it seems that Zheng Lian has made up his mind and swears to live and die with Songyang Pass. ”

Li Yi nodded thoughtfully and said, "There is no doubt about this, Zheng Lian is Yang Huaiying's trusted general, and it is impossible to persuade him to surrender. Now we are fighting on both sides with Tonghai, in fact, it is like a game, and we can't afford to delay it in terms of time. I don't know if there is any other good way, you can take Songyang Pass as soon as possible, you can speak freely, don't be bound by the conventional methods of following the rules. ”

Jian Zheng pondered for a while, sighed and said, "What the big marshal said is extremely true, what is lacking now is a whimsical plan. It's just that we had great hopes for the hedge, but now it has lost its due value. ”

"I think about it, like those digging tunnels, ladders and attacking cities, either the cost is too great, or it takes too long, and the effect will not be much better. If the water attacks, the terrain we are in is extremely unfavorable, and it is we who will suffer in the end. ”

"Although the conditions for a fire attack are sufficient, the city has already been prepared, and it cannot play a fundamental role. In my opinion, in the end, we still have to use the old method, using the catapult to constantly attack the defenders, and then launch ladders and rushing carts to attack the city, and there is no better way to do it. ”

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