At the beginning, for the purpose of concealment, the entrance of this tunnel buried in the ground was three miles away from the old Huguan, and the exit was also two miles away from the Huguan, and the entire interior of the tunnel was repaired very neatly and spaciously, and tens of thousands of troops could be hidden in it without being known.

Even when Huguan was in danger and was approached by Li Zhi by piling up earth walls, Zhao Yun did not expose this tunnel that could transport troops to the enemy's back. Because the strength of the Huguan defenders was limited at that time, even if they touched the back of the East Road coalition army from the tunnel, they could catch the other side off guard, but they could not reverse the entire battlefield situation, and once the tunnel was discovered by the coalition army, it was likely to become a convenient passage for the coalition army to cross Huguan.

If Zhao Yun hadn't retreated with his troops in time and built a new wall, Li Zhi's troops would have carved out a secret passage from under the Huguan at that time, forming a pattern of internal and external attacks on the old Huguan. The tunnel that Li Zhi led people to dig at that time passed through the middle of Huguan, but the tunnel that Zhao Xing asked people to build was built around the foot of the mountain next to Huguan, so it could not be noticed.

Zhao Xing's original purpose of building this Tibetan tunnel was mainly to assist the defenders on the old Huguan to annihilate the invading enemy in one fell swoop, and now the old Huguan has changed hands, just so that the troops can be secretly transferred from the direction of the Jin State to the east of Huguan, and give a surprise attack to the 20,000 Yuan troops stationed in Huguan.

Late at night on December 25, Zhang Liao led 20,000 dismounted troops on foot into the tunnel. The authentic import is still to the west of the new Huguan, so naturally Yuan Jun on the old Huguan will not find out. Although the tunnel is built three feet deep from the ground, because it is built against the foot of the mountain, there are vertical ground vents in the bushes on the mountain at intervals, which not only facilitate concealment, but also maintain the air flow in the tunnel.

The 20,000 soldiers of the Dragoon Army passed through the tunnels quickly, and there was no movement on the ground. It took them almost half an hour to fully pass through the five-mile-long tunnel. Since the exit of the tunnel is also two miles away from the old Huguan, when Zhang Liao came out of the tunnel, Yuan Jun on the old Huguan was still sleeping soundly, unaware.

In the past, when the old pot was in the hands of the Jin army, the west side was called Guannei, and now the old pot pass is in the hands of Yuan Shao, so naturally the east side is called Guannei. The soldiers and weapons and materials guarding the pass are transported from the stairs leading to the pass in the pass, and once the enemy army breaks into the pass, the soldiers on the pass will be cut off.

After the 20,000-strong army had completely passed through the tunnel and had been assembled, three fireworks suddenly rose from the west side of the old Huguan, illuminating the originally dark night sky. Subsequently, the 10,000 dragoon soldiers who remained in the west of Huguan began to launch a feint, and the awakened ** hurriedly led the crowd to resist at the pass. When the two sides were inseparable, Zhang Liao led his troops to the base camp of the Yuan army located in the east of Huguan, killed the Yuan army left here, and then ordered people to change into the clothes of the Yuan army, and took advantage of the chaos to climb the wall one after another.

The **, who was attacked by the inside and outside, was not able to resist for long, and became the unjust soul under Zhang Liao's Huanglong hook sickle. ** Became the fourth general to be killed by the Jin army after Chun Yuqiong, Han Heng and Cen Bi, this time the troops besieging Jizhou showed a rare ferocity, and adopted a ruthless attitude towards the enemy generals, which shows how resolute Zhao Xing's attitude is to destroy Yuan Shao.

**As soon as he died, the Yuan army on Huguan was in chaos, and he was soon captured by the dragoons. According to preliminary statistics after the war, in addition to the 10,000 people who served as a feint, the 20,000 troops behind Yuan Jun who felt through the tunnel suffered slight losses, which would not affect the next task of attacking Jizhou.

After the dragoon army captured the old Huguan, they immediately handed over the heavy responsibility of guarding the pass and more than 10,000 Yuan army prisoners to the Crouching Tiger Army who rushed over from the new Huguan, and then quickly advanced to the east, and it took only three days for the army to appear on the Jizhou Plain.

Yuan Shao's 80,000 troops were consumed in half of it in just half a month; the four counties of the nine counties of Jizhou near Youzhou were completely lost, and now the dragoon army entered the Zhao State again, pointing at Julu, Yuan Shao's territory saw that Wei County and Qinghe State were left close to the Yellow River, and Julu County and Anping Kingdom in the hinterland of Jizhou were already in danger.

At this time, Yuan Shao's original confidence was of course gone, and the three-way army of the Jin State was not only as high as 90,000 in number, but also unambiguous in the speed of attacking the city and grabbing the land.

Yuan Shao didn't care about scolding and complaining, and emotionally wrote a letter to his uncle Yuan Kui and his ally Cao Cao, in which he clearly stated that he was about to be unable to bear it, and if the imperial court and Cao Cao saw death and did not save him, then he would completely abandon Yecheng and lead his troops to flee into Hanoi County, so that the imperial court and Yanzhou would directly face Zhao Xing's army of nearly 100,000.

Zhuge Liang, who had been paying close attention to the situation in the north, did not expect that Zhao Xing would dare to launch the Eastern Front Campaign when the situation in Liangguo was unstable, let alone that the Jizhou army, which claimed to have 80,000 people, would be so vulnerable that it would hand over most of the land in Jizhou to others in less than a month.

Zhuge Liang then suggested that Liu Bei immediately start a plan to run on the peasants, soldiers, merchants, and gold banks, and urgently transfer troops to Yangzhou, Yuzhou, and Jingzhou to the north, and at the same time let Zhu Jun's army stationed in the Chaoge area quickly go to Jizhou to reinforce Yuan Shao, and in any case, the Jin army should be blocked in the north of the line from Guangping to Julu, so as to prevent the Jin army from drinking the Yellow River and posing a direct threat to the Central Plains.

The Xiongwu Army and Xiong Zhenjun, who successfully took Changshan Kingdom and Bohai County, continued to move south, and met under the Liao Tao City in Julu County, thinking that they could easily take the Liao Tao City, but the two armies suffered a loss under this big city that Zhang Liao had operated for many years.

It turned out that it was no one else who was ordered to guard the Taocheng City, but the famous general Zhang He. Yuan Shao allocated 10,000 halberd elite soldiers to Zhang He, and Zhang He collected the rout of Yuan's army that fled to Julu from Changshan and Bohai, with a total of more than 20,000 people, but it was enough to defend the iron bucket-like pottery city.

Zhang He has a very clear understanding of the siege weapons of the Jin army, especially for the thunder that once blew up the great sage and good teacher Zhang Jiao, he is very jealous, so when Zhang He took over the city, he organized tens of thousands of people to turn the dry city of Taotao into a water city surrounded by a moat on all sides.

No matter how powerful the thunder is, it has to be piled up under the city gate hole to play the role of blasting, and now there is a moat barrier, and the Yuan army defending the city keeps firing bed crossbows and boulders at the head of the city, and for a while Li Jinwu and Xu Shu have no way to take the pottery city.

Because Zhang He played a role at a critical time, delaying the march speed of the Jin army's southward march, he won a rare respite for Yuan Shao, and the situation will change unpredictably on the next Jizhou battlefield.