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At this time, King Liu Jing of Han was in Changwu Juncheng, Yilu County, northern Guanzhong. The Jing River came from the west and converged at the intersection of Yilu County and the Maling River flowing from the north. The water volume suddenly increased and the river surface became wider. A large ship of thousands of stones could be used on the river surface, making Yilu County an important transportation hub.

In terms of military affairs, Yilu County is also the intersection of the northwest Xiaoguan Road and the northern Maling River, and its strategic position is of great importance. Changwu City is built on the commanding heights at the intersection of two entrance to Guanzhong Roads, and at the same time cut off two entrance to Guanzhong Roads. It is a strategically important military city.

In order to defend the Huns' army from the Maling River, the Han army deployed 10,000 troops in a series of military fortresses, including thousands of troops stationed in Changwu City. At this time, Liu Jing, accompanied by veteran Yan Yan, inspected the newly built city. Changwu City began to be built half a year ago and is located on a branch of Wuling. At the foot of the mountain is the official road entering Guanzhong in the north, close to the Jingshui River.

The two great rivers flow from the north and the west and converge not far from the foot of the mountain. As long as you guard Changwu City, you will also guard the important road entering Guanzhong.

Yan Yan led Liu Jing to a row of catapults on the edge of the city and smiled: "Your Highness, please see these twenty catapults. Although they are not big, they can throw tiny oil barrels onto the official road and then ignite them with rockets, which will block the southward official road. Unless it is winter, the enemy will go directly to the river surface, and we can do nothing, but I heard that the northern nomadic peoples have no precedent for attacking Guanzhong in winter."

"What if they attack Guanzhong this time in winter?" Liu Jing asked lightly.

"If this is the case, our defense focus will not be Changwu City. In Qixian in the south, there is also a defensive fortress there. We can use the fortifications of Zhengguo Canal to intercept the Xiongnu cavalry coming from the north, and at the same time cut off the logistics supply line of the Xiongnu people in Changwu City."

"There are fortifications in Zhengguo Canal," Liu Jing asked in confusion, but he did not see it when he came.

"Report to Your Highness, Zheng Guo Canal starts from Jingshui in the west and reaches Luoshui in the east. Seven or eight small castles were built on both sides of the Jingshui River. We built stone walls between the castles. At that time, as long as an ice wall is built on the ice surface, it will become the last line of defense against the Hun cavalry."

Although Yan Yan introduced it in detail, Liu Jing still felt it was unreliable. How could a few small stone walls stop the impact of the 100,000 Huns? However, this was not Yan Yan's problem, but because of the weakness of Guanzhong's terrain, there was little favorable terrain available for support. Large-scale defensive fortresses must be built, but it would take at least five to ten years to build a complete large-scale defensive system, and it is too late now.

At this moment, a guard ran to report: "Report to His Highness, General Wei reported an emergency."

Liu Jing was stunned. Wei Yan actually had emergency information. Did the Huns come from Luochuan Road? But if it was possible to think about it carefully, the most convenient way to go south from Gaonu was Luochuan Road. Liu Jing immediately said to Yan Yan: "The veteran general continues to strengthen his defense, and I will rush to Luochuan Road immediately."

Yan Yan bowed and said, "I obey the order, and I have some suggestions. Your Highness can go to Luochuan Road along Zhengguo Canal, which is two days longer than going to Chang'an."

Liu Jing nodded and ordered the left and right guards to "get south immediately"

Under the escort of more than a thousand cavalry, Liu Jing ran east along the branch next to the Zhengguo Canal. The next morning, everyone arrived in Chiyang County. In front of a spacious official road, Liu Jing blocked his war horse.

He looked at the official road heading north with a serious expression, and slammed the war horses in circles. Wei Jin, the new deputy commander of the guard, felt a little strange and stepped forward and asked, "What are your highness looking at?"

Liu Jing pointed at the official road and said, "Since you are from Guanzhong, do you know the name of this road?"

Wei Jin was slightly stunned. He looked at the official road and immediately realized, "Your Highness, this is Qin Zhidao."

Liu Jing nodded, "Yes, this road is the famous Qin straight road. It starts from Ganquan Mountain to the south and reaches Hetao in the north. It is nearly 1,500 miles away. It is a straight road. More importantly, it also passes through Gaonu County in the north."

Wei Jin frowned and said, "Your Highness means that the Huns will go south along the Qin straight road."

"Do you think it's impossible?"

Wei Jin shook his head, "After all, four years have passed, and although this straight road is intact in Guanzhong, what will happen in the north? There are many passes to the north. Xiang Diaoling Pass, Juyuan Pass, Wuting, Laoyeling, etc. are all major intersections. A dangerous pass has been built to control the traffic branches around the North Mountain. It is almost impossible for the Xiongnu to go south from Qin Shi Road."

"You're right. I mean, we should strengthen the pass defense of Qinzhi Road and make Qinzhi Road an important throat to control Luochuan Road and Maling River. Whether the Huns came from the Maling River or headed south from Luochuan Road, Qinzhi Road's defensive troops could reinforce with each other."

Speaking of this, Liu Jing looked at both sides of the straight road, but did not see a pedestrian. At this time, Wei Jin understood what Liu Jing meant and pointed to the south and said, "There is an inn two miles away. I will go and find the inn."

Liu Jing nodded, and Wei Jin immediately led two followers to run south. A quarter of an hour later, Wei Jin rushed to him with a man in his forties. The man looked a little nervous. He ran to Liu Jing, turned over and got off the horse and knelt down and said, "The straight road to the south post's chief Qiu Ren paid a visit to His Highness the King of Han."

"Qiu Yicheng is exempted from gifts"

The postmaster Qiu Ren stood up and stood up nervously with his hands down. Liu Jing asked him, "How long have you been at the postmaster?"

"Report to Your Highness, I have been in the inn at the age of twenty."

"Twenty years, it's not too short, so you must be very familiar with the situation of the straight road. Is that true?"

"Weizhi knows the straight path very well."

Liu Jing smiled and said, "I need a guide who knows the straight road very well now, so you can stay by my side for a while."

Qiu Ren was excited and bowed quickly and said, "I am willing to serve your nobleman for his job."

Liu Jing pointed to the north and asked, "If you walk north, will you still go to Luochuan Road?"

"Report to your Highness, the straight road and Luochuan Road were originally one road north of Diaoyin County. It started from Diaoyin County, and there were mountains leading to Luochuan Road from here to the north to Diaoyin County. The widest road was Laoyeling in front. There was an official road leading directly to Luochuan Road in Laoyeling Pass. It was specially built by the army supporting Luochuan Road."

Liu Jing was overjoyed and smiled at everyone, "Let's go a straight road first, and then turn to Luochuan Road."

He urged the horse to move quickly, and everyone followed him and ran north along the wide and flat Qin straight road. Half an hour later, everyone arrived at a pass, which was Laoye Ridge. The pass was built at a dangerous place, and it happened to cut off the Qin straight road. It was called Pinghu Pass, which was the last pass to enter Guanzhong by Qin straight road. It was guarded by five soldiers and was under the jurisdiction of the veteran Yan Yan. The pass guard was a military marquis named Jiang Ning.

Hearing that His Highness the King of Han arrived, he hurried to greet him. Liu Jing asked him, "There is an enemy situation ahead of the straight road."

"Report to Your Highness, there are beacon towers in Wuting Pass, Juyuan Pass and Diaoling Pass ahead. Once the Huns army appears on the straight road, fire will be raised immediately along the passes. I will also raise fire to inform Chang'an. So far, the front has been very quiet, indicating that there are no Hun cavalry on the straight road."

Liu Jing pondered for a while and asked: "How far is Diaolingguan from Diaoyin County?"

"About ten miles"

"If a large Hun army appeared in Diaoyin County, would Diaolingguan know?"

Jiang Ning was a little embarrassed, and shook his head for a while and said, "Diyin County is abandoned, and Diaolingguan has basically no contact with the county town. If the Huns gather in Diaolingyin County, I think Diaolingguan's defenders would not know."

Liu Jing didn't say anything more, and immediately ordered him: "Strengthen the alert, especially pay attention to the Huns coming from Luochuan Road."

Liu Jing led his army to the northeast from Laoyeling. He rushed to the Han army camp in Suyi County at noon the next day. The day camp was located on the high ground in the north of the county town. There were towering mountains several miles away. Although this place was not the starting point of Luochuan Road, it was a dangerous location. The Han army built Shangyuan Army City at a valley entrance, as an important castle for the defense of Luochuan Road.

Liu Jing and his group arrived in front of the camp. Wei Yan had already reported that he would welcome His Highness the King of Han outside the camp. "I am looking for His Highness the King of Han" Wei Yanshen said with a tribute.

Liu Jing turned over and got off the horse and asked, "Have the military advisor arrived?"

"Report to your Highness, both military advisors have arrived and are waiting for the big tent."

While receiving the news from Wei Yan, Liu Jing also used a message to inform Chang'an Jia Xu and Fa Zheng to Luochuan Road with a flying pigeon. Liu Jing did not expect that the two of them would come so quickly. At this time, Wei Yan wanted to report again, but Liu Jing waved his hand and said, "Go to the big tent and talk."

Wei Yan hurriedly led Liu Jing into the camp and came to the main account. However, he saw Jia Xu and Fa Zheng standing in front of the map discussing something. Liu Jing walked in with a smile, "How come the two military advisors arrived before me?"

Jia Xu turned around and smiled, "Actually, we were about to come to Suyi County, and we received the letter from His Highness, so we ran away, and it was only half an hour ago."

Liu Jing asked Fazheng again, "Have you notified Chang'an to send troops?"

Fa Zheng nodded, "General Liu Hu has led ten thousand to Luochuan Road. It should be half past the time and will be able to arrive at the camp at night at the latest."

Liu Jing then felt relieved and turned around and asked Wei Yan: "What's the situation now?"

"Report to Your Highness, the latest information is that the 50,000 Xiongnu army arrived in Diaoyin County. One of the vanguards of 5,000 people went south on Luochuan Road. They are currently blocked by Yiyun Fort. They cannot capture them for a long time and suffer heavy casualties."

Liu Jing frowned, "I remember the last time I was in Yong County, you told me that Yiyun Castle only has soldiers. Can soldiers stop the attack of 5,000 people?"

Wei Yan hurriedly said, "Your Highness, there were only people guarding him at that time, but a scout sent by Beizhi encountered the Xiongnu provocation. They captured two prisoners of war. From the prisoners of war, Beizhi received the news that the Xiongnu vanguard went south, and immediately added 2,000 troops to Yiyunbao. The Xiongnu vanguard happened to be killed, and reinforcements arrived in time to defend Yiyunbao."

Liu Jing felt something strange in Wei Yan's eyes, and asked again: "Have you really kept it?"

Wei Yan was nervous and had to bite the bullet and report the details, "Report to Your Highness, Yiyun Castle has been lost twice and recaptured twice. The defenders suffered nearly 70% of their casualties, and finally defended Yiyun Castle."

Liu Jing glared at him fiercely, and actually wanted to hide it from him. However, now Liu Jing has no time to care about Wei Yan's little thoughts. He pondered for a moment, then turned around and asked Jia Xu: "What do you think of the military advisor?"
Chapter completed!