Tian Zhangxing rushed up the mountain, and sure enough, the entire top of the mountain had been controlled by Deng Ai's army, and the remnants of the Shu army had retreated to the back mountain, which was about two miles away from the first line of defense, and the Shu army used stones to build a new line of defense, and was making the last resistance.

This has nothing to do with the overall situation, the terrain on the top of the entire Jingjun Mountain is flat, and the Shu army, which has lost its geographical advantage, will only be destroyed for a long time.

Tian Zhang ignored the disdainful gazes of Deng Ai's subordinates, and immediately launched a full-scale attack on the second line of defense after going up the mountain.

But entering the range of the Shu army, Tian Zhang's face was suddenly pale, although the density of the Shu army's crossbow arrows has decreased, but the Yuan Rong crossbow is still as sharp as ever, a hundred crossbow salvos can form a death fan, once it enters its range, there is almost no chance of escape.

Although some of the soldiers had shields and could barely resist a little, the bamboo grenades that followed made them suffer a catastrophe, and the violent explosion even threw some soldiers into the air.

Tian Zhang almost cried, he originally wanted to chase and beat the water dog, but unexpectedly he was bitten back, and the first attack, Tian Zhang lost at least four or five hundred people.

Isn't this a cheat? Didn't you say that the Shu army had been defeated, how could it still have the power to resist?

Tian Zhang's army is not as iron-blooded as Deng Ai's people, and they began to retreat as soon as they hit the south wall, Tian Zhang was also remorseful, and he knew that he still let Deng Ai attack, and he was not distressed if he lost his troops.

Deng Ai has also reached the top of the mountain, but he is still far from the second line of defense. Watching Tian Zhang's men and horses rout one after another. A cold smile appeared on Deng Ai's face. Liu Yin is the most difficult opponent he has encountered in his life. Not only with advanced weapons, but also with tenacious will is what Deng Ai admires the most, leading a private army of several hundred people, he dares to compete with tens of thousands of regular troops and the results are extraordinary, this courage and perseverance are by no means comparable to ordinary people.

Tian Zhang, who has the idea of opportunism and bargaining, is strange if he doesn't kick it on the iron plate.

"Gather all your bed crossbows and get ready to attack before dark!" Deng Ai calmly issued a military order.

Tian Zhang's soldiers couldn't count on it. Deng Ai was not ready to drag out the battle until tomorrow, he was going to strike hard and completely smash Liu Yin's remaining strength.

Dozens of ballistas are still on the mountainside, and the bulky ballistas need at least five or six soldiers to move.

The firearms of the Shu army and the Yuan Rong crossbow are powerful, within a hundred steps, the Wei army has no weapons to match, but the Wei army has a bed crossbow with a range of three hundred steps, this weapon with amazing destructive power can be deployed in the position that the Shu army's Yuan Rong crossbow and grenades cannot attack, the reason why the Wei army was able to break through the first line of defense of Jingjun Mountain, the role of the bed crossbow can not be ignored.

Deng Ai wanted to launch a general attack. The bed crossbow is an indispensable weapon of choice.

Dozens of bed crossbows were carried up to the top of the mountain by the soldiers, and the mountain road was too rough. The wheels mounted under the bed crossbow did not fulfill their mission at all. The bed crossbow was quickly placed two hundred and fifty steps away from the front of the second line of defense of the Shu army, although the maximum range of the bed crossbow could reach more than three hundred steps, but two hundred and fifty steps was undoubtedly the best attack position, and the bows and arrows of the Shu army did not have such a long range.

The Wei bed crossbowmen began to twist the axle at the back of the bed crossbow, the bed crossbow made a creaking sound, the thick bowstring opened up under the action of the machine, and the soldier in charge of loading the arrows mounted the cluster of arrows almost a man tall on the bed crossbow.

All the Wei soldiers who were ready to participate in the attack were ready to go, just waiting for Deng Ai's order.

As soon as Deng Ai was about to give the order, he heard a loud sound like a landslide cracking, and the entire top of the mountain seemed to shake under his feet. Could it be an earthquake? This was Deng Ai's first reaction, but he quickly rejected this idea, because not far in front of him, there was another loud noise, Deng Ai could see it clearly, the soil was splashing, the smoke was rising, and two Wei soldiers were directly thrown into the air, and when they fell back to the ground again, they had broken into several pieces.

When the Wei army landed, there was a great chaos, and the entire Jingjun mountain top seemed to have become an active volcano at this moment, with continuous explosions one after another, and the smoke and dust of the land stirred up more than ten zhang high.

Deng Ai had seen the power of bamboo grenades, but these guys buried in the soil were obviously more powerful than bamboo grenades, and their lethality was quite amazing, as long as they were within five feet of the explosion, there were hardly any survivors in sight. Explosions rang out one after another, and the entire mountain became a hell of death.

The Wei army was completely stunned all of a sudden, just now they had celebrated the victory, and in such a blink of an eye, the entire Jingjun mountain top collapsed and cracked, and the dust raised covered the sky and the sun, falling into darkness and chaos.

This is Liu Yin's last hole card - stone mines. Stone mines are loaded with five or six times more gunpowder than bamboo grenades, which are naturally five or six times more powerful, but the mines are too heavy and can only be buried in the soil, and they cannot be thrown dozens of paces away as easily as grenades.

As early as when he had just arrived at Jingjun Mountain to prepare for the war, these stone mines had been buried on the top of Jingjun Mountain as Liu Yin's last hole card. At the top of Jingjun Mountain, there are several hundred stone mines planted every few steps, forming a vast mine net.

Each of these mines has a long fuse, which is worn in a bamboo, connected to each other, and if one fuse is lit, all the stone mines on the top of the mountain will explode.

After Liu Yin retreated to the second line of defense, he lured the Wei soldiers up the mountain, while holding the second line of defense, and seeing that the Wei soldiers were about to launch a final offensive, Liu Yin ordered the stone mine to be ignited.

When the explosion occurred, Shi Su was beside Deng Ai, and suddenly, he noticed that there was something abnormal in the ground under his feet, and knew that there must be something underground, and it was too late to escape at this time, not to mention that even if he could escape Deng Ai, it would definitely be difficult to escape, he shouted: "Be careful!" ”

Then he pounced on Deng Ai's body and crushed Deng Ai under him.

At this time, a deafening explosion resounded under his feet, and the huge sound of the explosion directly knocked Deng Ai unconscious, and the flying earth buried his body.

Deng Ai was only in a coma for a short time, and soon he was awake, his eardrums still buzzing, and his headache was splitting. Deng Ai got up and looked around. (To be continued......)