After crossing the Sashui River, the Tang army continued to advance eastward.

In the afternoon of the same day, 20,000 light horsemen quietly dismounted 10 miles outside Pyongyang, and then fled into the mountains and forests, where the whole army quietly rested and recuperated, waiting for dark.

With the help of the trilogy, Li Su struggled to climb a big tree, squinted his eyes and looked ahead, and saw a black city wall looming in the distance, the city wall could only see an outline, but he could vaguely feel its majesty.

Outside the city wall, there is a vast and boundless plain, suitable for cavalry to rush and charge, it is too far away, except for these, Li Su can't see anything else.

Turning over neatly and going down the tree, Fang Lao Wu offered wet wipes, and Li Su carefully wiped his hands clean before exhaling leisurely.

"In the end, it is the capital, the walls are built high and long, if it is attacked according to the ordinary method, it will cost at least 50,000 casualties to capture this city."

Fang Lao Wu sneered: "Compared to our Chang'an City, it is far worse, if anyone dares to attack Chang'an City, throwing a million people will not be enough." ”

Li Su smiled and said, "What about my uncle?" ”

"The general is resting in the forest, is Grandpa going to see him?"

Li Su nodded, and Fang Lao Wu led him towards the depths of the mountain forest.

The mountains and forests are densely wooded, and the deeper you go, the dimmer the light becomes, and when you reach the depths of the forest, it is almost pitch black.

It took Li Su a long time to find Li Ji, who was leaning against a tree at this time and closing his eyes to recuperate, and more than 100 guards next to him were standing guard in a circle.

Seeing Li Suxing coming, the guards saluted one after another, and then got out of the way.

Li Ji also woke up when he heard the footsteps, and when he saw Li Su coming, he nodded lightly at him.

"See Pyongyang City? What do you think? Li Ji asked.

"If you attack by force, it may not be easy to take, if you only have our troops, the defenders can easily hold the city even if they only have 2,000, and Pyongyang should only launch a surprise attack, and you must not attack by force, otherwise the casualties are unimaginable." Li Su said with a smile.

Li Ji nodded: "If you don't think about winning in everything, you should think about defeat first, tonight, if the lord of the country Gaozang fails to open the city gate as agreed, we will not move, and only wait for tomorrow to use the original method of taking Gyeongju City, let Xue Rengui lead 500 people to disguise themselves as Goryeo people to blend into the city, and then forcibly open the city tomorrow and night." ”

Li Su thought for a while and said: "Uncle, if you are not of my race, your heart will be different, I don't think we should put our hope on Gao Zang, although people are eager to seize power, they may not necessarily trust us, especially since our Tang Dynasty has just fought with Goguryeo, Gao Zang is the lord of the country, don't you have any precautions against us?" I can't say anything, if he sets a trap in the city, our 20,000 soldiers will die without a place to bury. ”

Li Ji's eyes narrowed: "What about Zizheng's opinion?" ”

Li Su pondered for a moment and said: "I think we should send Xue Rengui to lead five hundred people into Pyongyang City now, after tonight, it is best if Gaozang opens the city gate according to the agreement, if the city is not opened, Xue Rengui will be ordered to seize the city, and it is more reassuring to leave the matter of life and death to our own people." ”

Li Ji nodded and said: "Yes, this idea is reasonable, the old man is approved, come and pass Xue Rengui over." ”

Soon, Xue Rengui appeared in front of the two in armor.

After Li Ji explained the military order, Xue Rengui saluted and received the order, and smiled at Li Su before leaving.

At night, the mountains and forests become more and more silent.

Li Su leaned against the trunk of the tree, his eyes looking at the city of Pyongyang in the distance, his eyes flickering, and he didn't know what he was thinking.

Gao Lingzhen next to her sat silently on the ground, since Li Su talked to death last night, she never paid attention to him again, and she didn't speak all day.

"Hey, Your Highness Princess, if you say that if your father fails to open the city gate tonight, should we trust you and your father?" Li Su didn't have anything to say.

Gao Lingzhen said in a cold tone: "My father has always kept his word, and he will definitely open the city as promised tonight." ”

"What if it's not on? Don't be angry with me to tell you the truth, your father is just a puppet of Quangai Suwen now, you say that he has been secretly planning all these years, but no one has seen what he has planned, maybe the people he thinks he has won over are secretly laughing at him for being stupid......"

"You ......" Gao Lingzhen was angry, glared at him hatefully, and said: "Li Xiangong also asks for virtue under his mouth, my father has always acted steadfastly, he said that he will open the city gate, he will definitely open the city gate!" ”

"Tsk!" Li Su smiled: "Don't be excited, it's okay left and right, let's chat, you are a princess now, and you are not a captive, it's okay to scold you for relieving your boredom and it's a little rude, so I have to chat." ”

Gao Lingzhen turned her head angrily and ignored him anymore.

Li Su's eyes were as bright as stars in the dark night, staring at Gao Lingzhen's angry face, and suddenly said: "At dusk today, your father sent someone out of the city, and agreed with us to open the city gate tonight, Your Royal Highness Princess, have you ever thought that if your father did not open the city gate at the appointed time, and we attacked the city and found that your father did not encounter an irresistible accident, but did not want to open the door for us at all, Your Royal Highness Princess, how could you be embarrassed at that time?" ”

Gao Lingzhen trembled, then turned her head to stare at him, gritted her teeth and said, "I believe in my father!" ”

Li Su smiled: "The lives of 20,000 soldiers, I can't trust them with your words, but I hope your father really opens the city as promised, otherwise, I can't define whether your father is an enemy or a friend." ”

The two stopped talking again, Gao Lingzhen raised her eyes to look at the outline of the city wall in the distance, her eyes were full of unease, obviously Li Su's words made her nervous, from ancient times to the present, the relationship between father and son of the heavenly family is fragile, and now the daughter is still in the hands of Tang Jun, but her father can ruthlessly refuse Tang Jun outside the city gate, Gao Lingzhen really doesn't want to gamble on human nature, especially the human nature of her biological father, she is very afraid, afraid that she will see the most unwilling results.

Time passed slowly unconsciously, and the time came quietly, in the mountains and forests, Li Ji and Li Su both stood up and looked in the direction of Pyongyang City.

Gao Lingzhen also stood up, nervously looking at the lights on the city tower in the distance, her slender fists clenched tightly, as if she was gambling with her life.

For a long time, the promised letter was not sent, and it was still dark under the city gate, and as time slowly passed, Gao Lingzhen's face became more and more pale, and the despair and pain in his eyes became deeper and deeper.

Li Su watched coldly, and then sighed: "Your Royal Highness Princess, it seems that your trust in your father has failed......"

Gao Lingzhen burst into tears, but she still gritted her teeth and muttered to herself as if comforting herself: "Wait, wait......"

Li Su shook his head: "I can't wait, 20,000 lives can't be bet on the relationship between your father and daughter, fortunately, we have a back hand." ”

As soon as he finished speaking, he saw a dazzling flame suddenly rise under the west gate of Pyongyang in the distance, and the fire was so strong that it almost illuminated half of the city wall.

Gao Lingzhen also became excited: "Look, my father's letter has been raised!" ”

Li Su said coldly: "That fire was not set by your father, but Xue Rengui, this is what I call 'back hand'." ”

Li Ji was so excited that he slapped his thigh hard: "Xue Rengui is good!" The city gate has been obtained, and the order is given, and the whole army is mounted and marches towards the city gate! ”

All 20,000 men mounted their horses in the darkness of the night, and began to gallop in the direction of the city gates.

Gao Lingzhen stayed where she was, her face still as pale as paper.

The army has been dispatched, but Li Su and the hundred subordinates rode on their horses unhurriedly, following behind the team, Gao Lingzhen seemed to have lost her soul, and let someone help her on the horse in despair, and slowly walked towards the city gate.

When 20,000 Tang troops galloped on horseback, only three miles away from the city gate, the Tang army suddenly lit torches, one, two, hundred, thousand......

There was a rapid sound of gongs and drums from the city tower, under the city gate, Xue Rengui could vaguely be seen leading five hundred soldiers in disguise, fighting to the death with the enemy army guarding the gate, the battle was extremely fierce, the enemy army desperately rushed to the city gate, in a vain attempt to seize back the control of the city gate, one after another, as the sound of the Tang army's horse hooves outside the city became closer and closer, the counterattack of the enemy guarding the gate became more and more crazy.

Xue Rengui was covered in blood, holding a long halberd in front of the city gate, and the soldiers behind him were more or less wounded, but they did not give up half a step, and the enemy squeezed each other in the narrow corridor, fighting with a gun and a halberd.

In the same way as the capture of Gyeongju City, the Tang army's iron cavalry was getting closer and closer, and the defenders were becoming more and more desperate, when the first group of cavalry rode into the city gate, the enemy crowd let out a sad and desperate wail, and then some people threw down their weapons and turned around and ran, and some people desperately tried their tricks more and more intensely.

Hundreds of years have passed, the Central Plains Dynasty has tried to conquer this unruly enemy capital countless times, but in the end they have all been ruined and unrewarded. Until today, the first batch of Tang troops rode horses and spears and forced themselves into the city by force.

Iron horses into the city, the speed of the horses did not decrease, soon the second group, the third group poured into the city, along the way dared to resist all the enemy troops were mercilessly killed on the spot, not long after, the city was full of fires, only to see the streets and alleys hundreds of people panicked, running in all directions, countless defenders were in a hurry, struggled to resist, the whole city in the fire whimpered, weeping.

Xue Rengui was already riding on the horse at this time, holding a snow-bright halberd in his hand, the halberd was fingered, and the tip of the halberd reflected the firelight, reflecting a trembling light.

"Take the palace now! The rest of the city control each city gate and clear the city of the remnants of the enemy! Xue Rengui shouted.

The iron cavalry of the Tang army, which continued to pour into the city, dispersed according to the order, and finally when the general Li Jize entered the city, the Tang army had almost controlled the entire city.

Because Quangai Suwen maximized the transfer of the defenders in the capital, this capital can almost be called an empty city, the huge city only has more than 2,000 defenders, and there are some official servants, and some guards in the powerful families, the Tang army entered the city to suppress the enemy and felt that it was easier than attacking Gyeongju City, and soon controlled the city in their hands.

Xue Rengui was covered in blood, rode his horse in front of Li Ji, and smirked at him.

Li Ji glanced him up and down, showed an admiring gaze, and said with a smile: "Are you hurt?" What about the casualties of the soldiers below? ”

"General Yu, the last general is not injured, and the casualties of the five hundred brothers below are about two hundred, and the specific number has not yet had time to be settled."

Li Ji nodded, raised his eyes and looked at the city with fires everywhere, as well as the buildings and people with exotic flavors everywhere, Li Ji's heart suddenly stirred, and he looked up to the sky and laughed.

"Pyongyang, the capital of Goguryeo, the old man has to go!"