Diaoyu Mountain is located in the middle of the south of Diaoyu City, is the commanding height of the whole city, but the area only accounts for 20% of the whole city, is a small hill three miles long from east to west, two miles wide from north to south.

Moreover, the farmland area in Diaoyu City was originally arranged on the cliff platform on the westernmost side of the city, near the Jialing River, so once Liu Bi retreated to Diaoyu Mountain, it meant that the defenders completely lost their self-sufficient agricultural area and had no ability to replenish blood and make blood.

The walls and fortifications on the hill are not strong, simply because the mountain is too high and steep, so it is naturally very dangerous - the hill is 200 meters higher than the plain platform next to it.

It is conceivable that on the slopes of the mountains that are five or six hundred meters long on the east and west sides, the vertical elevation should be raised by 200 meters, which is almost a steep slope of 30 degrees. A little bit of trapping, antlers, and stakes along the mountain road can disgust you for a long time.

However, these fortifications are just troubles, not unsolvable. Li Su just practiced the siege tactics of the counterweight catapult advancing layer by layer, so that the troops could better run in, use as few human lives as possible, use more equipment, and completely pull out the last nail.

Since the invention of the counterweight catapult, it has been almost half a year, whether it is in Jianmen Pass or Diaoyu City, it has played a harassing role before, and it has not decisively captured any city pass. Now that we are on the verge of kicking the door, it is natural to have a good time to train the troops.

Moreover, taking advantage of this time, Li Su also reported to Liu Bei in advance, so that the follow-up main army could gather south as soon as possible, so as to prepare for the complete completion of the battle here, further swarming into Jiangzhou, and then going upriver to take the Chengdu Plain.

Liu Bei's main force was all northerners, and most of the other troops were afraid of heat, subtropical diseases and miasma, except for the newly subdued Ban Yuman. So in June and July, I didn't dare to make any big moves when I stayed in Hanzhong.

Even if the substitute troops who had to be sent to change guards with Xu Huang before, after arriving at the place, there were still a lot of fevers and miasma. Temporary non-combat attrition has increased by several hundreds.

Fortunately, Li Su insisted that everyone could not drink raw water and could not excrete anywhere, and used military orders to strictly restrict sanitary conditions, so as to ensure that more than eighty percent of those who were sick with fever and water and soil could be saved, and would not permanently lose their combat effectiveness or die of illness.

And to completely adapt to the climate in the south, it is impossible for those Youzhou troops to have a buffer period of two or three years. Neither stratagem nor the medicine of the time had no solution to this problem, it was the law of nature.

By the time Li Su's forecast was delivered to Nanzheng, it was almost mid-August, avoiding the hottest heat in Ba County. Liu Bei reorganized the reinforcements and marched to Jiangzhou by water, which was almost the end of August and the beginning of September, just in time to take advantage of the crisp autumn weather to expand another wave of territory. If the large army comes too early, it will also lead to the rapid consumption of military rations on the battlefield on the southern front, and it will not be possible to transfer it from Hanzhong, so the more soldiers are not always as good as possible, and they have to be redeployed when they can be used.

Everything went as planned, and on August 22, Zhao Yun led the main force of nearly 10,000 Youzhou cavalry and Wuhuan turquoise cavalry to rush to the Diaoyu City battlefield first.

Because of the topography of Yizhou, Zhao Yun's cavalry had not fought a few decent battles since they entered Sichuan, and the last time they shone was the battles in which they were surrounded and annihilated after luring the enemy out of Yangping Pass at the beginning of last year.

Now, it is finally time to break through the mountainous area and enter the Chengdu Plain along the Yangtze River, and you can divide the enemy army in a field battle of Pingchuan and give full play.

On the third day after Zhao Yun arrived, on August 25, the last diehard resistance elements of Liu Xuan's army were officially completely annihilated, and all the strongholds on the Diaoyu Mountain were cleared, and the Diaoyu City Battle officially ended.

Cumulatively, during the entire campaign, Zhou Tai and Xu Huang captured a total of 6,000 people, of which more than 4,000 were local soldiers in Yizhou, and less than 2,000 soldiers in Dongzhou.

The total number of defenders in three waves should add up to more than nine thousand, which means that three thousand people died. After counting, only about 40 percent of the defenders were killed and wounded and lacked medical treatment.

There are also sixty percent of the surrounding diseases caused by the heat, miasma, and gastrointestinal infections caused by the lack of firewood and raw food, and the vast majority of them are Dongzhou soldiers suffering from this disease.

These have nothing to do with Li Su bribing a traitor to poison Liu Mao, Liu Mao just ate raw fish and diarrhea and killed dozens of people who were in close contact with him. It can only be said that the northerners entered Sichuan, and in the first year, they came to the hottest furnace area, and with the sanitary conditions at that time, it was normal for a small half to die of illness in the environment of high-intensity warfare.

Not to mention the belligerent troops, even Li Su, a person who pays so much attention to staying at home to prevent exposure to the sun, has been psychologically shadowed by the heat of this place, and he will definitely not stay in Ba County in the summer in the future, even if he stays in Chengdu, it will be cooler and better.

In addition, as an aside, since Xu Huang's troops were plagued by fever and miasma during the siege of the city, Li Su decisively ordered Xu Huang to move and set up camp, moving from the open-air camp in the spring to a relatively shady area.

This point is actually a bit risky, because according to the classic sentence in the Art of War, "Those who are in danger and stationed troops are also taboo in this soldier", moving to a shady place in midsummer is easy to be attacked by enemy sneak attacks and ambushes.

In later generations, Liu Bei's battle of Yiling took place in the area from Diaoyu City and Jiangzhou in Ba County, and crossed the Three Gorges of the Yangtze River. The climate over there is not as hot and low latitude as here in Jiangzhou, isn't Liu Bei also the hottest time in June and can't help but move to the shade and be burned.

However, Li Su asked Xu Huang to move to Tun at that time, but he still left a back hand, and he also asked Gan Ning and Zhou Tai to lead the southern soldiers to set up an ambush and secretly become a horn. And Liu Mao had already been psychologically shadowed by the previous two sieges by land and water, and he did not have Lu Xun's IQ.

Therefore, I always feel that "there must be fraud in the shade of Xu Huangtun", and he can't defend without any fire attack attempts, which leads to the twists and turns of these tactics and defenses are completely fighting wits and courage with the air, without any obvious performance, and it is not enough for later generations to write history.

In the entire Battle of Diaoyu City, the cumulative number of deaths of the attackers was more than 2,000, but only more than 1,000 were killed in the battle, and the rest also died of disease. In terms of exchange ratio, Liu Beijun's cost is not high, but the consumption of grain and grass is very terrible.

After all, so many troops besieged the city for such a long time, and the front line ate nearly 200,000 stone of military rations, and then counting the 800 miles of waterway transshipment, and three or four dangerous shoals in the middle had to be reloaded and unloaded for land transportation transit, for the sake of a Diaoyu City, at least 340,000 stone of grain stored by the Hanzhong regime was consumed, and if it was converted into money according to the price of grain, it would be a little bit 500 million, and if it was left two years ago, how many officials could be bought directly. This is a typical waste of food and saving lives.

A few days after the end of the battle, on August 26 and 28, Guan Yu and Zhang Fei also rushed to the front. The armies passed through the gap in the Jialing River near Diaoyu City in turn, broke through the mountains of northern Chongqing, and arrived at the foot of Jiangzhou on the first day of September.

Liu Beijun assembled 30,000 main forces, including 10,000 cavalry, 10,000 northern infantry, and 10,000 newly attached captive reorganization troops and Banyu barbarian soldiers.

When Liu Bei's army entered Sichuan, the total strength was only 30,000, so this battle had mobilized two-thirds of the people from the Sichuan dynasty to fight, leaving only 10,000 henchmen and veterans to stay in the passes in the north and give early warnings.

……

The guards in Jiangzhou City mainly include military generals Yang Huai, Ling Bao, Li Yi, and civil official Zhang Su.

There were Gao Pei and Zhao Wei before, but Gao Pei's reinforcement of Diaoyu City was killed by Gan Ning, Zhao Wei was also arrested, and finally surrendered again, so the defenders of Jiangzhou were really withered. Although there are still nearly 10,000 horses, the morale is very low.

The main force of the Han army was 30,000 people, and after the regiments surrounded Jiangzhou City. Early the next morning, Li Su asked Zhao Yun to set up a position in the open area in the northwest of the city, strictly organize the team, display the banner, and strengthen the army, so that Li Su could send people to surrender and disintegrate the enemy's military heart.

Anyway, Zhao Yun's cavalry troops have to wait a little longer and enter the Chengdu Plain to be useful, and now they still can't be used to attack the city, so they should be used as an honor guard to scare people.

Yang Huai and Zhang Su at the head of the city were also shocked when they saw the neat 10,000 cavalry below, with bright blades and bright armor. The southern Bajun garrison had never seen so many Youzhou cavalry at all.

What's more, according to his own understanding, Zhao Yun specially picked out the white horses, about two or three thousand, ranking in the front, and at least a thousand cavalry in the front row are all iron-armed, and the iron-armored white horses are endless, which is also too terrifying.

"General Zhengxi's army is so strong, Diaoyu City can't be defended, let alone my Jiangzhou?" Zhang Su trembled in his heart, but he was afraid of being suspected by his colleagues, so he didn't dare to show his timidity.

Zhao Yun waved his gun and pointed at a few people next to him, and then shouted the lines that Li Su taught him: "The defenders of the city listen!" This is Liu Yan's self-proclaimed puppet Bajun Taishou Zhao Wei, who has been captured by our army and surrendered to Shun! Zhang Su, you are just Zhao Wei's long history, why don't you descend early?

This is Wu Ban, the son of Wu Kuang, the former Beijing Division Northern Army and Zuo Zhonglang General, who also defected to the general of Zhengxi with his father in an attempt to quell the rebellion, and his brother Wu Yi has also abandoned Liu Mao and surrendered in Diaoyu City. The degree of Liu Mao's henchmen may be compared with Wu Yi? If you are obsessed and resist the imperial court, the day the city is broken, you will not be spared! ”

One example after another was in front of him, and the morale of the defenders of the city was even more demoralized: "What? Zhao Taishou was also arrested and surrendered? ”

"The lieutenant general of the Northern Army of the Beijing Division also came to prove the authenticity of the holy decree in his hand for Liu Bei? Are we really betraying the court and fighting against the army? ”

Li Su took the opportunity to continue to let Zhao Yun lead some scolding fighters to shout: "The defenders in the city listen!" Liu Mao was not killed during the battle in Diaoyu City, he was killed by eating fish and giving birth to diarrhea! In his thirties, he is so weak, and others can't eat fish and pull him to death, but he dies, this is a curse! ”

"In ancient times, Wei Bao listened to Xu and betrayed the Han Dynasty, but he died and Bo Ji was obtained by Gaozu. Later, Liu Xin heard that Liu Xiu changed his name as the Son of Heaven, so he was killed by Wang Mang. The thief who believes in the prophecy and wants to force the destiny of heaven can only bring about his own destruction and laugh for the world!

Do you know why Liu Mao died suddenly after such a minor illness? Because he vainly believed that the Wu family was unspeakably noble, and tried in vain to force the mandate of heaven, he died violently! This is God can't see him alive to fight this battle and go home to get married! Are you going to die with this damned? When the time comes, not only will you die in vain, but you will also die in the name of shame and shame for future generations! ”