As early as when he decided to conduct a night attack, Liu Yu had already thought of the inconvenience of marching at night.
Even if it is a smooth road like the later generations, coupled with signs, road signs and other markings, there will still be situations where you get lost at night.
What's more, in ancient times more than 2,000 years ago, not only were there no signs or road signs, but even the roads were very crude.
On roads built according to the trends of mountains and rivers, it is very easy to get confused and get lost when traveling at night.
Therefore, Liu Yu asked Youlun to select many soldiers who were familiar with the road to accompany him.
As the cavalry general of the former army, the responsibility of leading the way naturally fell on Wu Xin.
Liu Yu took out a small silver box from his body and handed it into Wu Xin's hands.
"Bo Cheng, you lead the way. I give you this compass to use. Compare it with the map to prevent the guide from making mistakes."
Limited by the manufacturing accuracy, this kind of compass is better than nothing, but it is still better than getting lost in the fog.
Later, under the cover of heavy fog, Liu Yu led four thousand front troops towards Rongcheng in the northwest.
However, it only took more than an hour to walk on a journey of more than 30 miles.
The road from Yicheng to Rongcheng has been maintained and used based on the Qinzhi Road built in the Qin Dynasty. Because there are deep track marks, there are no cases of getting lost on the road.
When the forward cavalry said they were approaching Rongcheng, Liu Yu ordered the entire army to rest where they were.
"Your Majesty, there are no sentinels outside the city. Even if there were, they would be of no use in this foggy day."
Wu Xin had almost touched the bottom of Rongcheng's city wall just now. Even at such a close distance, the defenders on top of the city could not detect anything at all.
"This city is not big. There are only two gates in the north and south. It is very simple to block it!"
Liu Yu felt very confident after hearing this.
The combat effectiveness of the Youzhou sergeants in these cities has been severely reduced. Not to mention comparing with the elites of the Han army, even compared with the previous Youzhou army themselves, they have seriously regressed.
Since the Youzhou generals Qi Hong and Wang Hu, who were good at military affairs, died of illness, Wang Chang, Sun Wei, Wang Zan and others of the Youzhou army did not have enough commanding power. Most of the soldiers were quickly divided and reduced to the heads of various armies. The private soldiers were regarded as slaves.
"As long as the men fight bravely and capture two city gates, it is already a victory."
Liu Yu was convinced of this.
Along the way, he talked with the guide sent by Youlun and learned that these ordinary Youzhou sergeants were very envious of their counterparts in Qingzhou and Han Dynasty.
These Youzhou soldiers know that the soldiers of the Han State are all called "junfu soldiers". Not only are they not the servants of generals and officials, they even have land ranging from a hundred to a thousand acres, and they don't have to pay taxes. corvée.
Therefore, the information Liu Yu received from these former Youzhou soldiers made him understand the principle of "subduing the enemy's army without fighting".
Liu Yu even thought secretly in his heart.
'I'm afraid that after the Han army climbs the city wall and shouts a few times, the Youzhou soldiers guarding the city will surrender. '
Sure enough, subsequent facts proved that Liu Yu's conjecture was perfectly confirmed.
After the former army approached the city wall, in addition to dividing their troops to block the north gate and cavalry patrolling around, the remaining troops concentrated on capturing the south gate.
At this time, the city gates were basically made of thick hardwood, and in a small city like Rongcheng, there was no such thing as an urn city.
Therefore, the Han army directly carried a large amount of fire, salt, and sulfur as weapons to burn down the city gates.
Because Liu Yu had already discovered that the city defense system of this era was far inferior to that of later generations. There were very few city gates covered with copper and iron, and there were basically no culverts for water filling.
Instead of spending a lot of effort digging the ground and digging the city wall, it would be more convenient and faster to burn the wooden city gate directly.
When the Han soldiers approached the city gate and placed fire, salt, and brimstone in preparation for burning the city gate, they alerted the defenders overhead just a few meters away.
"who!?"
"Someone!"
A few words with a Youzhou accent penetrated the fog and reached the ears of the Han army.
The Han soldiers outside the city didn't answer at all. Using the dim torch light at the top of the city, they followed the direction of the sound and immediately fired a burst of bows.
"Puff puff"
"ah!"
"There is an enemy attack!"
Several muffled sounds and screams were heard immediately.
At this moment, a huge yellow-white light suddenly flashed at the city gate.
Under the oxygen supply of potassium nitrate and the deflagration of sulfur, the wooden city gate was quickly ignited and burned through.
Under the influence of oxygen and combustion, no wooden city gate can withstand the temperature of nearly a thousand degrees.
Everything happens in a matter of moments.
The defenders behind the city gate didn't even have time to move the stones and rolling logs blocking the city gate, so they watched as a hole was burned through the wooden city gate.
Several Han troops near the city gate also saw the burned-through city gate.
"Gentlemen, this is the moment to be the first to get there!"
After a leading Han army officer said these words, he covered his head and face with a large smock and walked towards the shabby city gate hole that was still burning.
The huge fire and the strong smell of gunpowder smoke frightened the nearby defenders. Except for a few courageous sergeants who planned to block the city gate, the rest of the Youzhou Army soldiers screamed and ran away in fear. .
"Seal the city gate quickly!"
"Don't let the thieves in!"
Several Youzhou sergeants had just yelled and stopped a few soldiers when they suddenly heard bursts of killing sounds coming from the burning city gate behind them.
In the horrified eyes of the soldiers of the Youzhou Army, several "thieves" wearing armor, holding swords and guns, and with smoke coming out of their blouses, had already passed through the burning city gate and entered the city.
In just the blink of an eye, these Youzhou soldiers who were trying to carry wood and rocks to block the city gate were all killed on the spot.
These Han troops who had "landed first" immediately braved the scorching heat and removed the bolts of the two huge iron gates behind the city gate.
The two city gates, still glowing with fire, slowly opened.
Several former Youzhou Army guides who were with Liu Yu saw that the thick city gate was burned through in a moment. They all exclaimed that ghosts and gods have come to the world, and knelt on the ground and kowtowed to the city gate.
Everyone kept mumbling.
"The divine fire comes to the world!"
"Zhurong Divine Fire!"
Liu Xian grinned happily.
"In a moment, the city has fallen."
Zhao Kun next to him also smiled happily when he saw this.
"Your Majesty, it's so easy to destroy the city. I think this method can be used. Give me ten thousand people and I can defeat Luoyang!"
Liu Zhan had no time to pay attention to him. With a wave of his hand, several generals on standby led the soldiers to kill into the city.
At this time, Liu Yu glanced at Zhao Kun.
"The courage of an ordinary man, do you think that all the cities in the world are like this remote town?"
