For Bocai's response, the Han army thought of it early on, and with Su Xiu asking the wolf tooth to inquire about the news, the situation on the entire Yangzhai battlefield was completely under Su Xiu's control. And He Yi, who was in Yangguan, after receiving Bocai's request for help, ordered 20,000 horses and set off from Yangguan to Yangzhai.

Su Xiu brought a total of more than 30,000 Taishan troops, accounting for more than half of the Han army, so when the soldiers surrounded Yangzhai, they controlled the west gate and the north gate of Yangzhai, Cao Cao and Huangfu Song each controlled one side, although Bocai still had nearly 50,000 people in Yangzhai City, but the grain and grass outside the Changshe City were burned, and they suffered two defeats in a row, and their morale plummeted, so they did not dare to rashly go out of the city to face the battle.

On the fourth day of the siege of Yangzhai, Su Xiu received information from the wolf's tooth that the 20,000 horses led by He Yi had approached Yangzhai and was only a hundred miles away from the West Gate, and he should be able to narrow the distance to seventy miles before setting up camp at night.

Su Xiu sent the information to Cao Cao and Huangfu Song, and asked the two to follow the plan, while he himself hurriedly called Xi Zhicai, Zhang Fei and He Wang to the camp to discuss how to send troops.

"Zhicai, now He Yi has approached the West Gate, and there is only one official road from Yangguan to Yangzhai West Gate, and there are two places that are convenient for ambushing, one is a canyon, about one and a half miles, and the valley can only accommodate two or three people to pass side by side, and the other is that there is a dense forest five miles behind the canyon, and the official road passes next to the dense forest. Both of these are convenient ambush spots, where do you think we should set up an ambush? ”

"Lord, He Yi doesn't have any brains at all, but he can occupy Yangguan and radiate Yangcheng, and there must be people around him who know the soldiers to give him guidance, so we can set up an ambush in the canyon, but it is not suitable to be exposed, just let them pass."

"Huh? Then why are you setting up an ambush? Zhang Fei heard Xi Zhicai say this, and hurriedly asked.

"Yide, don't interrupt, listen to Zhicai to finish speaking."

"Yide, let me ask you, what would you do if you knew that there was a place that could be easily ambushed during the march and you had to go?"

"Uh...... If I have to go, I'll send someone to investigate in advance and make sure it's safe to do so. ”

"Then what if the military situation is urgent, and I can't let you investigate carefully?"

"In that case, I'll have to take the risk and get through, but I'll have the soldiers on guard and be ready for any possible ambush."

"That's right, although He Yi is a reckless man, he should still know this at least the method of marching, and there should be people around him to help him, so he must not make such an obvious mistake. Therefore, we must conceal and set up an ambush so that he cannot find out. ”

"If there is an ambush, why let him pass?" Zhang Fei still didn't quite understand.

"After people are on high alert, once they leave the danger zone, then their vigilance will be relaxed, and at this time, they will be sluggish when they encounter danger, so that we can catch them off guard, and they will definitely retreat into the canyon after they have lost the battle, because this is what they have just passed, and they will no longer think that there is still danger here, and after they retreat into the canyon, the ambush will be exhausted, and under the front and rear attacks, He Yi will definitely be defeated."

"According to Zhicai's meaning, we have to make a pocket at the mouth of the canyon, wait for He Yi to get in, and then ambush in the canyon. Yes, we can reduce our losses by about 30%. ”

Su Xiu's original plan was to set up an ambush above the canyon, and when He Yi passed, he would cut off his waist, so that he could not take care of the end of the end, but in this case, it was more to repel He Yi, and the battle damage would be greater, after all, the terrain did not have much advantage over both sides of hand-to-hand combat.

And Xi Zhicai's plan is to lower the opponent's vigilance first, so that he repeatedly surprises the other party when his vigilance is at its lowest, so that the blow to morale will be greater, and the resistance will be smaller, so that the battle damage can be better reduced.

"Then how do you draw waves before you come out after repelling He Yi?" He Wang is also a high-ranking member of the Taishan Army now, and he still knows a little about the plan he drew up before, and the purpose of this time is to go out of the city to rescue, not just to defeat He Yi.

"This is going to make a fuss about the ambush, we can't kill He Yi completely, we have to leave him about half of the remnants of the army, so that he has to ask for help in the direction of Yang Zhai, and at the same time we have to let them go over to report the news, and before Bocai arrives, we will add fire, nail He Yi to death in the canyon, and then clean up Bocai again."

"Lord, what if Bocai doesn't come?" Zhang Fei scratched his head and asked.

"He can't help but come, He Yi came to save him, if he doesn't come, his prestige in the army will be greatly damaged. And he didn't dare to bring too many people out, because he didn't know how many people we had set up in ambush, and he was afraid that Yang Zhai would not be able to hold it if he brought too much, and he was afraid that he would not be able to save He Yi if he brought too little, so 20,000 people was the most feasible. This is Yang Mou, even if I tell him that there is a pit here, he will have to jump Yang Mou. ”

Hearing this, Zhang Fei felt a slight chill down his spine, and he had already begun to sympathize with Bo Cai in his heart, who did you meet someone who was not good, but when you met someone like your own lord and military advisor, you can only blame your own bad life.

That night, Su Xiu quietly took 20,000 soldiers out of the camp tent, and Huangfu Song and Cao Cao arranged the suspicious soldiers in their camp and then each sent half of the soldiers and horses to Su Xiu's camp to prepare for a big break tomorrow.

Sure enough, He Yi was careful when he crossed the canyon with 20,000 soldiers and horses, and after passing through the canyon at the fastest speed, he was relieved.

"It seems that the official army is nothing more than that, if it were me, I would definitely ambush an elite army on this canyon, and if I took it by surprise when the enemy passed, I would definitely be able to win a lot."

"That is, how can there be such a wise and martial person in the Han army? Speaking of Bo Shuai, he was too sloppy, he was defeated and retreated by such a Han army, after rescuing Bo Shuai this time, presumably the great sage and good teacher will definitely praise He Shuai, and these thirty-six marshals will definitely have a place for He Shuai. ”

"Hahaha...... Uh, what's the situation, this Han army actually didn't set up an ambush in the canyon, but waited for us to get out of the canyon before fighting? He Yi, who was enjoying his subordinates' sycophants, suddenly saw a team of brightly armored officers and soldiers rushing out of the exit of the canyon, and immediately suppressed the laughter, which was really worse than eating a fly.

Before He Yi could react, He Wang ordered the archers to shoot arrows, and after a round of arrow rain, He Yi ordered the shield soldiers to raise their shields to defend, and he led his soldiers to start charging, trying to break through the blockade of the official army.

But before He Yi could rush up, two other teams appeared on both sides of the exit of the canyon, and they were attacking He Yi's formation with bows and arrows, and suddenly a large number of Yellow Turban troops fell.