In the afternoon, Zhao Yu did not have any further earnest talks with Jiang Cheng, because only he knew that his heart disease was more serious than his physical illness, and the heart knot was suddenly opened, and he let go of the heavy burden, and naturally felt more relaxed physically. However, he knows that this is only a symptom but not a cure, injuries are not overnight, physical injuries still need to be recuperated, and if there is a 'return to the light' thing, the joke will be big.

After taking a break, Zhao Yu found a shade in the small garden in the backyard of the county government, and after a little arrangement, he began to check the new information and information about Xiangyang. Among them, there are not only the chronicles of the past dynasties, the notes and travelogues of the predecessors collected by the Imperial Front Office along the way, but also the information sent by the Secretariat recently. In short, the content is very complicated, involving all aspects of folk customs, folk customs and geography in Xiangyang area.

Zhao Yu spread several maps of Xiangyang in the past dynasties on the desk, which were all found before the imperial affairs were turned over, and re-enlarged and transcribed, so that he could easily check them. The ancient map is very painful to look at, there is no scale, no contour line, and no unified mark, only the direction and the surrounding mountains, rivers and villages can be intuitively distinguished, as for the accurate altitude, the distance between the two places do not think, often only mark a place to a certain place how many miles.

Even if the map is so simple, Zhao Yu still attaches great importance to it, because over the past thousands of years, not only the terrain and landform will change, but the rivers will be diverted and cut off, and the place names will also change. Therefore, it is necessary to keep comparing, otherwise it is likely to happen that the donkey's lips are not in the horse's mouth, which is fatal to the army.

What Zhao Yu is holding in his hand now is the map of Xiangyang City, which is the latest version drawn by the Bureau, and the paving on the desk is not only drawn by the previous dynasty, but also after the previous rebuilding of the current dynasty. As long as it is compared, it is possible to see the history of the construction of this city, so that it can be found that there are weaknesses in the defense of the city, after all, there are differences in the craftsmanship, materials and quality used in the construction of the city in previous dynasties, and it is possible to distinguish where it was once washed away by water and damaged in war.

From the point of view of time, Xiangyang City has a history of more than 2,000 years, was built in the Han Dynasty, rebuilt in the Tang and Song Dynasties, and moved to the east and north from the end of the Northern Wei Dynasty to the early Tang Dynasty. In the first year of Shenlong, Zhang Cambodia was the history of Xiangzhou Thorn, the Han water soared, and he used the Xiangyang County of the Two Han Dynasty and the city wall of Xiangyang Mansion from the Three Kingdoms to the early Tang Dynasty to build a flood control embankment in the west of the city. So far, the position of Xiangyang city has stabilized, forming a square city with a height of nearly three zhang, a width of five zhang, a circumference of nine miles, and a radius of fifteen miles.

However, the addition and repair of Xiangyang City mainly occurred in the Song Dynasty, especially after the Jingkang Change, the Zhao and Song Dynasty moved south, and the military role of Xiangyang City was highlighted. When filial piety, Xiangyang increased the repair of the city, "the building and the pheasant moat are all magnificent, stop the fort, the slow road is scarce, slow the enemy and attack the city, the edge is far away, and the reinforcements are difficult to cope." He also "built four additional forts and eleven slow lanes" so that the troops in the city could quickly ascend to the city to support the battle.

In the eleventh year of Chunyou, Li Zengbo, who had not long been appointed as the pacification envoy of Jinghu, believed that the status of the Yingxiang area was very important, especially Xiangyang, which must not be abandoned, so after repairing the city of Yingzhou, he asked the imperial court for 15,000 reinforcements and financial support, intending to recover Xiangyang. The imperial court sent 8,000 men to him from elsewhere to support him, and allocated 10 million guan for military expenses.

In April of that year, Li Zengbo sent Gao Gao, the deputy capital of Jing'e, and Wang Deng, the shogunate, to lead 21,000 Jinghu troops to attack the Mongol army entrenched in Xiangyang. During the battle, the soldiers of the Southern Song Dynasty fought bravely and tenaciously, fought bloodily, and conquered Xiangyang and Fancheng in one fell swoop. After recovering Xiangyang, Li Zengbo ordered the construction of the city, and built 10,000 barracks in the city within two months for garrison use.

On the three city gates in the southeast and west of Xiangyang City, the urn city was added, the brick wall was built in the important position, the horse face and the watchtower were added on the city wall, and the wild goose wing city that extended to the riverside was newly built in the northeast and northwest corners of the city, and the two wild goose wing cities that the east and west corner towers of Fancheng arrived at the riverside echoed, and the defense capability of the two cities of Xiangyang was enhanced. There is an urn city outside each city gate, which is also called the Tun Soldier City, which is used to garrison soldiers and store weapons, commonly known as the Moon City, and there are city towers built on the city gates. After the reinforcement of Xiangyang City, the defense capability of the surrounding Changjiuli has been greatly enhanced.

Located in the northwest corner of Xiangyang City, Lady City is a city outside the city that is closely connected with Xiangyang City. For the Eastern Jin Dynasty Taiyuan three years in the Lang General, Liangzhou Thorn Shi Zhu Xumu Mrs. Han led the public to build, after many expansions, rectangular, slightly outwardly protruding, the east is connected with the city wall of Xiangyang. The south, west, and north walls are built with rammed earth, and the outer walls are built with bricks of the city.

In view of the fact that "it is easy to build a city and difficult to defend a city", in the spring of the following year, Li Zengbo put forward a six-point proposal to the imperial court to manage Xiangyang, including the implementation of camping fields, rewarding tuntian, transporting rice and grain, building castles, tax exemption, and increasing troops to assist in defense. The imperial court partially adopted his suggestion and allocated a subsidy of 1 million yuan for the construction of tuntian fields and canals and weirs, and exempted Xiang and Yingzhi from taxes for three years.

Therefore, the layout of the whole Xiangyang city is rigorous, the situation is dangerous, easy to defend and difficult to attack, the north city wall is close to the Han River, and the other three sides have a wide moat. After that, the Song and Yuan Dynasty fought for the Yangtze River, relying on the solid Jingxiang city defense system, the Song Dynasty carried out a decades-long anti-Jin and anti-Yuan war, and finally the Southern Song Dynasty relied on the danger of Xiangyang, the abundance of grain reserves, and the perseverance of the army and the people, and carried out a major battle in Xiangyang for six years, and the 100,000 Yuan army had no way to take Xiangyang City, but could only besiege it for a long time.

The excavation of the moat of Xiangyang City also became a huge obstacle to the siege. It is bordered by the Han River in the north, and the river channel is artificially excavated on the east, south and west sides, and the water of the Xiangqu Canal is drawn from the southwest corner outside the city, and it is connected with the Han River through the culvert gates in the southwest corner and the northeast corner respectively in different periods, separating the city from the land outside the city, and becoming a buffer zone in the wartime, which greatly guarantees the safety of the city.

However, when Zhao Chun guarded Xiangyang in the second year of Kaixi, the width of the moat was about seven zhang. When Lu Wenhuan guarded Xiangyang, the moat was widened a little, and the widest part reached more than 30 zhang, which was the widest artificial moat in China at that time. After the moat was widened, in order to facilitate the connection between the city and the outside world, the east, south and west gates were respectively connected with the land route, and the sandbar in the water was used to artificially build a roundabout, which was used as a support to build two suspension bridges to help the connection between the inside and outside of the city.

Outside the urn city of this kind of gate, there are small underwater forts that are separated from the mother city, similar to the defense system commonly used in Western fortresses, which appeared in Xiangyang, which made Zhao Yu feel very surprised, and it is very rare in China. Building a fort around the island can be used as a bridgehead, and it can also become the front line for defending the city. For the besieging side, it became an insurmountable obstacle, and the construction of the pontoon bridge would inevitably be disturbed by the defenders in the fort, and the capture of the bridgehead was blocked by water, making it difficult to deploy troops.

In addition to the complete city defense system, the Han River outside Xiangyang City flows south from the east, north and west, and the south is the steep Da Hyeon Mountain Mountains. Seven miles west of the city, there are Wanshan Mountains bordering Hanshui in the north, and Shun'an Mountain in the south, forming the western barrier of Xiangyang; Seven miles south of the city, there is a mountain to set up a risk, forming a southern barrier; In the north of the city, it overlooks the Han River, faces the Fancheng Jiajiang River, and communicates with each other to form a tight defense system.

On the periphery of Xiangyang City, there are many outlying strongholds such as Niujiao Fort and Castle, which effectively defend Xiangyang City and become the first line of defense of Xiangyang's defense system. If you want to get close to Xiangyang City, you need to clear the stronghold in the mountains and destroy the enemy forces entrenched there. The defenders occupy the commanding heights, which are easy to defend and difficult to attack, and if they are besieged, they will consume a large number of troops, which will inevitably weaken the siege force.

In the face of such a strong city, if you want to conquer the city as soon as possible, how can you carry it out? This made Zhao Hao look at the map and think hard, and the tiredness of running around for days made him fall asleep unconsciously......

"What's wrong?" Zhao Hao was sleeping in a daze, and suddenly heard sobbing, opened his eyes and asked suspiciously.

"Your Majesty......"

"Zhiwu?! Why are you crying? Zhao Yu stabilized his mind, his eyes gradually condensed, and seeing that Lin Zhiwu was wiping tears with his sleeve, he quickly got up and asked.

"Your Majesty also has to take care of the dragon's body, don't get tired!" Lin Zhiwu hugged His Majesty and said with a crying voice.

"Oh, I'll just take a nap, it's okay." Zhao Yu patted his shoulder and chuckled.

"Your Majesty, you just fell asleep and scared us all!" Wang De, who was beside him, handed over a glass of water and said with a frown.

"It's all dark...... How long have I been asleep! Zhao Yu looked left and right, the lights had been lit, but he was sleeping on the bed in the middle of the house, and Ni Liang, Chen Shishi, Ma Duanlin and others were all around, he drank saliva and asked.

"Your Majesty fell asleep in the garden, and I didn't know that it was raining, and the little yellow door that accompanied me couldn't wake up, so I could only carry Your Majesty back." Wang De replied, "When the little one saw that His Majesty was asleep, he asked the imperial doctor to see it, and said that it was caused by His Majesty's overwork." When Ni Dushuai and the others heard about it, they all rushed over to take care of it, and it was already unitary time. ”

"Hehe, I slept for so long, I just thought I was taking a nap!" Zhao Yu shook his head with a wry smile, remembered something and asked, "Didn't you alarm Jiang Shuai and Wang Xiang?" ”

"I didn't tell Wang Xiang and Jiang Shuai, but the little one was so scared that the six gods had no owner, fortunately, Ni Du was all there, otherwise I really don't know what to do!" Wang De's heart palpitated.

"It's best to do this, otherwise it will be misunderstood by everyone, and if you don't get it right, it will shake the morale of the army!" Zhao Yu said with a sigh of relief. He knew that now was the critical time for the handover, and if the news of his body feint came out, it would inevitably cause panic among the troops, and he didn't know what would happen.

"Your Majesty has been on the expedition for nearly a year since last year, and the war over there has just ended, and he has been running thousands of miles to Xiangyang non-stop, which is really too hard, and he should recuperate for some time." Chen Shishi said that they were responsible for the behind-the-scenes work, and Shang Jue was very hard, and His Majesty not only had to command the battle, but also have to review the recitals and work for state affairs, which was several times more tiring than them.

"My subordinates heard that Your Majesty can only rest for two hours a day, and the food is as simple as ever, and people who have been beaten so hard for a long time will also be boiled, so let's rest for a few days!" Lin Zhiwu also persuaded.

"Survive these few days, and it will be good to recover Xiangyang!" Zhao Hao looked at several worried henchmen and said with relief......