Luo Zhaoyun knew that Laihu'er had the experience of commanding sailors, and was good at water warfare, when he attacked Goguryeo, Laihu'er trained sailors in Bohai Bay, Shandong, and had a lot of experience in water currents, wind directions, and warships.

So, this arduous task was handed over to Laihu'er, to build a warship, part of which was reserved for the vanguard army, and then carried him to lead the troops across Weishui, around the location of Wuzhangyuan, and then went north to continue to cross Weishui, directly inserted into the back of the four cities along the river, and cut off the back road of the Tang army.

Chen Liang led his troops to attack the towns, townships, and pavilions south of Weishui in Fufeng County, including an area of several hundred miles and becoming the control of Dahua.

Although there are no big cities, there are still many counties and towns, and they timely convey the national politics of Dahua, absorb local people to join the army, purchase grain, etc., which will weaken the influence of the Tang army in Fufeng County, which can be described as killing two birds with one stone.

More than ten days passed quickly, and on the east bank of the Wanghe River, Li Jiancheng's team was also gathering, and strategists and generals arrived one after another.

Li Daoxuan, Liu Hongji, Murong Luohu, Duan Zhixuan and others joined the army and waited for the prince's dispatch.

"Ladies and gentlemen, according to the scout intelligence, the Dahua army is building ships in Xi'an, the river, it seems that they will forcibly cross the river, and then attack Huangyuan, Huangyang and other cities, it is not known that they will choose that location to land, but there are only a few locations suitable for the army to land on the beach, and the rest are mostly steep mountains, our army will pay close attention, once it is found that Dahua crosses the river, you can draw out the soldiers and horses, and attack it halfway." Li Jiancheng said in an analysis.

Liu Hongji looked a little haggard, his face was clear, he was captured in those days, he was mistreated, and his body became a little weaker, and he said at this time: "His Royal Highness the Prince, Luo Cheng is good at using soldiers to use tricks, and now that he is driving a personal expedition, this kind of thinking of using soldiers will definitely continue to be used, beware that he has other tricks to deal with us." ”

Strategist Li Wengan said: "Yes, the last time there was a big earthquake in the pass, we suffered a loss in terms of grain and grass, but we were unexpectedly attacked by the Dahua army, 80,000 horses, almost trapped in Xiongguan, this time, we need to be more cautious." ”

Li Jiancheng said: "Our army defends along the river, with four cities as the line, echoing from north to south, but taking the river as a risk, it has not been grasped since ancient times, and it is easy to be smuggled and attacked at night, so His Royal Highness has sent a lot of men and horses to patrol along the river every day to guard against enemy attacks and tricks." ”

Li Wengan continued: "This time, the grain and grass in the four cities are enough for 100,000 troops, and after using it for more than two months, it should be able to withstand it for a while." ”

Yu Wenying looked worried, and expressed her worries: "My subordinates are worried about the two cities of Nanyou City and Chencang City, and I am afraid it will be difficult to keep them." ”

Li Jiancheng said: "As long as you hold on, you can drag the Dahua army and distract it so that it will not be able to cross the river with all its might." ”

………

The sunset is like fire, the sunset is full of sky, the endless wilderness is dotted with felt tents, some soldiers in the camp are wrestling with their shirtless bodies, and many people around them cheer for them, some people are taking off their saddles and are drinking and feeding their horses, combing the manes of their war horses, some people are squatting in front of the stove pit and busy cooking rice, and wisps of cooking smoke are rising.

Luo Zhaoyun took the military generals of Wenchen and began to patrol the camp to express his concern for the soldiers.

Everywhere they went, the three armies were greatly encouraged and warmly welcomed, and shouted one after another: Long live, long live!

"Your Majesty, the army is in full swing and can attack at any time!" Hou Junji said beside Luo Zhaoyun.

Luo Zhaoyun nodded and said: "Take Nanyou City first, let the recruits practice their hands, your vanguard elite, surround Chen Cangcheng, so that it is impossible to go out to rescue, these cities, we will break them one by one!" ”

"I understand." Hou Junji surrendered his hands to obey orders.

A few days later, two young generals, Xue Wanbei and Mai Mengcai, commanded 30,000 new troops and besieged Nanyou Xiaocheng.

"Knock knock!"

The drums of war were beating, the gongs were noisy, the horns were sounding, and the Dahua New Army was put into the battlefield, not only to attack the city and fight, but also to carry out actual combat tempering.

Soon, after the exchange of arrows, the two soldiers staged an ancient siege battle, and the Dahua recruits climbed to the city like a tide, and fell down like ripe grapes, and death and injury were inevitable.

In siege warfare, the advantage will definitely be on the defending side, condescending and occupying a favorable position.

Because the Dahua army had high-quality and advanced ordnance, trebuchets, urns, etc., which came in handy, the Tang army at the head of the city suffered a lot and weakened some of the geographical advantages and disadvantages.

Half a day later, the bones of the city piled up, blood stained the moat red, with the gradual increase in the strength of the army and horses, the situation of the Tang army defending the city was not optimistic.

The Tang general named Wu Yihan, who was in charge of guarding Nanyou City, commanded the Tang army in the city, fighting to the death, not listening to the persuasion outside the city at all, and ignoring the persuasion letter shot into the city.

"Hold on, the prince is staring at us on the other side of the river, holding this city and dragging down the Dahua soldiers and horses is to win the opportunity for the prince to break the enemy." Wu Yihan drank heavily, but he was quite loyal to his duties.

However, some of the adjutant generals were dissatisfied, because the prince had obviously given up Nanyou City, let them live or die, and would not send troops to rescue them, and did not let them retreat, but only carried them to the end here, so as to consume the enemy's soldiers and horses, and finally bury all the Tang troops in the city.

"Boom, boom!"

The rushing car kept hitting the city gate, and the stone bullets of the trebuchet were also smashing the buildings in the city, and the city was in a mess, but it was still insufficient to break the city.

When dusk, the Dahua soldiers and horses retreated, and the city was full of corpses, and there were soldiers on both sides.

In this battle, there were casualties, about four or six kai, even if the Tang army relied on the advantage of the city, the casualties accounted for more than forty percent, about five or six thousand.

The next day, Dahua soldiers and horses changed a group of new troops and continued to attack the city, still honing these new troops who had not been in actual combat.

However, most of this group of troops were composed of Hu people, who were quite brave and fierce, making the city head of the Tang army already precarious.

This is not a big city, so the height is limited, and it is relatively easy to attack, and with more and more Dahua soldiers climbing over the city, the Tang army has a tendency to collapse in defense.

"Boom!"

Suddenly, the city gate was knocked out, and the soldiers and horses outside the city suddenly pounced, frantically rushing to the Tang army's defense line at the city gate, handing over the short soldiers, the soldiers in front fell, and the back did not hesitate to step on the corpse to advance, among which a Mo knife battalion in the new army, responsible for opening the way, holding a Mo knife unstoppable, the blade passed, and the Tang soldiers fell in waves.

Nanyou City was broken in two days.