Li Yuanji, the king of Qi, saw that Li Shimin had made meritorious contributions one after another, and he had lost the birthplace of the Tang Dynasty - Jinyang of the Three Jin Dynasty (Taiyuan in later generations), and felt too embarrassed. So he asked his father Li Yuan to lead troops to recover the Three Jin Dynasty and Jinyang, Li Yuan saw that this son with developed limbs, simple mind, and some unsuccessful weapons now wanted to make meritorious service to atone for his crimes, and he was very happy, so he agreed to him. However, I felt that Sanjin was too important, so I asked the prince Li Jiancheng to go together.

Li Yuanji and Li Jiancheng are both jealous of Li Shimin, so they smell like each other and are angry, and the two decided that they must fight a few big victories in Sanjin this time, give themselves some face, and compare Li Shimin.

However, Liu Wuzhou and Song Jingang are not easy to mess with, especially their general Wei Chi Gong (尉 Chi Jingde) is even more brave and fierce, and bravely crowns the three armies.

Wei Chi Gong, the word Jingde, Shuozhou Shanyang people, people often call Wei Chi Jingde. Tall and mighty, the sound is like thunder, the face is like black charcoal, brave, simple and loyal, brave and good at fighting.

It is said that Wei Chi Jingde is good at eliminating and avoiding spears, and whenever a single horse rushes into the enemy's formation, the enemy's spears pierce at the same time, but he can never stab him, and he can also grab the enemy's spear and assassinate the enemy with his hand.

After Li Yuanji and Li Jiancheng led an army of 50,000 into the Three Jin Dynasty, in September, they arrived in Jiexiu, and Song Jingang and Wei Chi Jingde resisted with the city. Li Yuanji and Li Jiancheng camped at the foot of the Suoyuan Mountain in Sanjindu, drinking mountain stream water in the barracks, Song Jingang and Wei Chi Jingde sent people to quietly cut off the water source, and the Tang soldiers were thirsty and tired. Li Yuanji and Li Jiancheng wanted to move the camp closer to the water source, but Song Jingang and Wei Chi Jingde took the opportunity to attack with their troops, so Li Yuanji and Li Jiancheng's army was defeated and almost completely annihilated. Song Jingang killed Jiang Baoyi, the general of the Tang Army under Li Yuanji.

Subsequently, when Li Yuanji and Li Jiancheng led the remaining remnants of the army to retreat to Xia County, Song Jingang sent his generals Chi Jingde and Xun Xiang to lead troops to take a shortcut and quickly rushed to Xia County to ambush. Li Yuanji and Li Jiancheng suffered a crushing defeat on their backs, and their generals Li Xiaoji, Dugu Huaien, Yu Yun, Tang Jian, and Liu Shirang were all captured by Song Jingang and Wei Chi Jingde.

Li Yuanji and Li Jiancheng escaped by luck and fled back to Chang'an in despair, pleading guilty to their father Li Yuan.

Li Yuan was shocked and angry when he heard the news, and was shocked that the combat effectiveness of Liu Wuzhou and Song Jingang's troops was so strong, and he was angry that the two sons of Li Yuanji, the king of Qi, and Li Jiancheng, the crown prince, were too unsuccessful, especially Li Yuanji, the king of Qi, was defeated in successive battles in the Three Jin Dynasty, and his troops were lost. Li Yuan severely reprimanded the two, confiscated the military power of the two, and ordered the two to think about it behind closed doors at home and reflect on the reasons for their failure.

However, Sanjin Jinyang is the birthplace of Li Yuan, and the geographical location is also very important, and it must be recaptured, and he finally had to appoint Li Shimin, the king of Qin, as the governor of the Three Jin Dynasty and lead his troops to recapture the Three Jin Jinyang.

Li Shimin's 5,000 Xuanjia Elite Cavalry has basically been formed and trained, and the Mingguang Armor and the new Tang Dao have also been built, all of which are equipped to the Xuanjia Elite Cavalry. Due to the shortage of war horses in the Tang Army, it was indeed not easy for these 5,000 Xuanjia elite cavalry to be formed, and the war horses were also captured through various channels, including captured, purchased from the steppe Turks, northeast Liaodong, Hetao region, smuggling, etc., and the cavalry was also one in a hundred brave men who were good at riding and shooting.

Li Shimin reported to Li Yuan the weakness of the lack of elite cavalry in the Tang army, and proposed the importance of forming an elite cavalry.

Liu Wuzhou and Song Jingang both received strong support from the Turks and provided them with a large number of war horses, including many fierce Turkic cavalry, so the combat effectiveness of Liu Wuzhou and Song Jingang's armies was so strong.

After more than a month of serious preparations, Li Shimin, the king of Qin, took advantage of the freezing and hard opportunity of the Yellow River in winter, and Qin Qiong led five thousand Xuanjia elite cavalry to quietly cross the Yellow River from Longmen, stationed in Baibi of the Three Jin Dynasty, and confronted Song Jingang. He also asked the eldest grandson Wuji and Cheng Yanjin to lead 20,000 infantry to quietly cross the Yellow River while the Yellow River was frozen, and stationed in Baibi of the Sanjin Dynasty.

At that time, after the prefectures and counties east of the Yellow River were looted, there were no granaries, and the people were afraid of intrusion, so they lived in castles, unable to collect things, and the army was short of food. Li Shimin issued a message to the people, and the people heard that Li Shimin led the army to come, and all of them came to surrender, from near to far, the number of people who came increased day by day, and then the Tang army gradually collected grain, so the army food was sufficient. So the troops were suspended and the horses were fed, and only the generals of the non-main force were ordered to find a gap to plunder, and the army was fortified without fighting.

Song Jingang, as his name suggests, is tall, strong, with a round waist and broad shoulders, strong muscles, his face is as black as a pirate, his appearance is rough and strong, and the expression on his face is cold and cunning. A pair of dark and fierce eyes, as if ready to take the life of the enemy at any moment. It's like the reincarnation of the "mighty wrath vajra" in the five great vajra in the monastery.

Song Jingang personally led 10,000 elite cavalry to Baibi to challenge Li Shimin, although Cheng Yanjin and others asked for orders to fight, but Li Shimin insisted on the garrison of Baibi, suspended the army and horses, did not fight the wall, and waited for the enemy.

On the ninth day of the lunar month, it was rare to have a sunny day, but the sky was still blowing a cold northwest wind, and Song Jingang led his troops to Baibi to scold and provoke Li Shimin. The Tang army was excited and asked for battle, especially the newly formed Xuanjia elite cavalry. However, Li Shimin still waved his hand to stop it and was not allowed to fight.

At this time, the wind direction suddenly changed drastically, and a rare southeast wind blew. The location of Li Shimin's Tang army is in the southeast, and the northwest wind has always been a headwind relative to the Tang army, but now that the wind direction has suddenly changed, the southeast wind has become Song Jingang's headwind and the Tang army's tailwind.

Li Shimin, the king of Qin, keenly sensed the change in the direction of the wind, and his genius military mind allowed him to seize this once-in-a-lifetime opportunity in an instant. Li Shimin, the king of Qin, suddenly changed his strategy that he had been unable to hold, and immediately ordered the whole team of five thousand Xuanjia elite cavalry to attack. Li Shimin asked the eldest grandson Wuji to lead 20,000 infantry to continue to hold on to Baibi, and he led Qin Qiong, Cheng Yanjin and 5,000 Xuanjia elite cavalry to suddenly open the camp and rush towards Song Jingang's 10,000 cavalry team like a whirlwind.

When he was more than 400 steps away from Song Jingang, he ordered all the Xuanjia elite to charge at Song Jingang and shoot arrows, at this time the southeast wind was blowing very fiercely, and the wind flew towards Song Jingang like a rain of feather arrows, and the farthest shooting distance of the feather arrows was usually up to 200 steps, but today with the strong tailwind and the inertia of the war horse charge, the range of the Tang army's feather arrows far exceeded the usual, and Song Jingang's subordinates were hit by arrows and fell off their horses.

Song Jingang was shocked, originally thought that Li Shimin would not be able to hold on to it today, as in the past, so the formation of the team was relatively scattered, and the combat preparations of his subordinates were not sufficient, and many of his subordinates had not even unsheathed their knives, and they were still chatting privately from hand to ear. When he found that Li Shimin suddenly opened the camp and rushed towards him like a whirlwind, Song Jingang's troops were in a panic, and Song Jingang hurriedly ordered to set up a formation and prepare to meet the enemy.

When Song Jingang was still commanding the whole team, he found that arrows rained down from the sky, and many of his subordinates were hit by arrows and fell off their horses, surprised at how the Tang army's bows and arrows shot such a long distance.

He hurriedly ordered the soldiers to take out their bows and arrows to shoot back, but because it was a violent headwind, the feather arrows of Song Jingang's soldiers could not shoot far at all, and many of them were blown out of direction by the strong wind, and the billowing smoke and dust rolled up by Li Shimin's Xuanjia elite cavalry rushed towards them along the strong wind, and many of Song Jingang's subordinates were blinded by the dust that came to their faces and could not see clearly.

Even if some soldiers shot the Tang Army, but wearing the lighter weight but more protective Mingguang armor designed by Xia Xue, the Xuanjia Elite Cavalry was basically unscathed.

The Xuanjia Elite Cavalry rushed into Song Jingang's 10,000-strong cavalry array like a black super tornado, and the longer, tougher, and sharper Tang Knife glittered with cold light, like a death scythe, slashing the terrified Song Jingang's subordinates off their horses like wheat cutters. Song Jingang's troops were defeated, and 10,000 cavalry were rushed and killed, either beheaded or captured, and almost all the troops were annihilated.

In the end, Song Jingang took more than 100 personal soldiers to fight desperately to escape a bloody way back to Sanjin Xia County and join Lu Chongmao.

In this battle, Li Shimin, the king of Qin, showed his extraordinary military talent, and instantly seized the fleeting opportunity to defeat the Song King Kong troops, so that the morale of the Tang army was greatly boosted, and the gains were quite large, only the uninjured war horses were collected as many as more than 5,000 horses, these war horses were immediately equipped by Li Shimin to 5,000 Xuanjia elite horsemen, in this way, Xuanjia elite horsemen and two horses, can be changed to war horses on the road, so that the war horses can rest, so that it is more conducive to long-distance running, mobile combat, combat effectiveness is greatly enhanced.

After Li Shimin, the king of Qin, defeated Song Jingang, he pursued the victory, led more than 20,000 infantry to besiege and began to attack the county seat of Sanjin Xia County. Lu Chongmao and Song Jingang in Xia County saw that they were outnumbered, and hurriedly asked Liu Wuzhou for help.

Liu Wuzhou sent Wei Chi Jingde and Xun Xiang to lead 10,000 horses to the rescue. Li Shimin adopted the strategy of encircling the point to send reinforcements, and let Qin Qiong lead the Xuanjia Army to ambush on the way to Wei Chi Jingde's reinforcements.

When Wei Chi Jingde led his troops to Xia County, he was successfully ambushed by the elite Xuanjia cavalry led by Qin Qiong and Qin Shubao, the commander of the Ma Army and the general of Zuo Wuwei, at the snowy Meiliang River, and suffered heavy losses. And Qin Qiong won a major victory, capturing more than 5,000 enemies and killing more than 3,000 enemies. Wei Chi Jingde and Xun Xiang led the remnants of the army to flee.

Soon, Liu Wuzhou sent Wei Chi Jingde, Xun Xiang and other secret leaders to lead 3,000 elite cavalry to aid the king of Pusaka Xingben, Li Shimin after the detection, personally led the Xuanjia elite cavalry 3,000 people to take a shortcut to the night to run to Anyi to intercept, the big break, Wei Chi Jingde, Xun Xiang suffered heavy casualties, only led a dozen remnants to flee.

The morale of the Tang army was greatly boosted, and all the generals asked for a decisive battle with Liu Wuzhou and Song Jingang, but Li Shimin calmly analyzed the situation and believed that the time was not yet ripe. He said to the generals: "Song Jingang hangs the army deeply, and the elite soldiers are fierce, and the salty gathering; Liu Wuzhou according to Jinyang, according to the Song King Kong as a shield, the army has no accumulation, to capture and plunder as a resource, the advantage is in the quick battle. I closed my nourishment to frustrate his front, divided my troops to rush his henchmen, and he was exhausted of food, and he should have fled. When waiting for this opportunity, it is not advisable to fight quickly. So, he continued to carry out the plan of exhausting the enemy army and drawing wages from the bottom of the kettle. Liu Hongji, the head of the left marching army, and Zhang Lun, the head of the marching side, led the troops to the Xihe River to cut off the grain road of Song Jingang.

In the first month, the Tang generals Hou Junji and Li Junxian attacked Pusaka, and Pusaka's defender Wang Xingben was defeated and surrendered. Liu Wuzhou sent troops to attack Luzhou and Haozhou several times, but failed. Huang Ziying, who guarded the grain road, was also attacked and killed by Zhang Dezheng, the general of the Tang Hussars, and Zhang Nanbao was occupied by the Tang army. At this point, Liu's southern grain transportation route was cut off, and the strategic situation was more favorable to the Tang army.

On 14 February, Song Jingang was forced to retreat north with his army due to the lack of food. Li Shimin saw that the time was ripe, so he waved his army to pursue him, went to Luzhou, "ate" the department of the Xiangxiang Institute, kept going, and chased after the victory. After traveling more than 200 miles in a day and night, fighting dozens of times, the soldiers were extremely hungry and tired.

At the highest cliff, Liu Hongji's eye sockets were deep-set and his eyes were bloodshot, he stepped forward to grab Li Shimin's bridle, and said in a hoarse voice: "His Royal Highness the King of Qin broke the thief, attacked the city all the way, and chased the north to this point, the merit is enough, you should take care of your body!" Moreover, the soldiers are very hungry and tired, so it is not too late for everyone to stop to eat and rest, and then continue to pursue the enemy. ”

Li Shimin's face was tired, but his eyes were still bright, not at all like he had fought for a day and a night, and he said to Liu Hongji with full anger: "We are hungry and tired, and the enemy is even more hungry and tired!" Now we are wolves, the enemy is the prey, and we have to bite the prey like wolves before we can finally eat the prey. ”

Li Shimin believed that the opportunity could not be lost, so he still rode his horse and led the armies to forge ahead and pursue.

When he reached the Bird Mouse Valley, he pointed to the pile of fresh and steaming horse manure in front of him, and shouted to the soldiers: "Brothers, the enemy is ahead, kill!" ——”

Finally caught up with the main force of the Song army in the Valley of the Birds, and won eight battles in one day, capturing and killing tens of thousands of enemies. So far, Li Shimin and the soldiers have not eaten for two days, and they have not disarmed for three days.