Cheng Zhijie continued: "King Qin, I have another news to tell you that the prince has recruited more than 2,000 brave men from Chang'an and other places without authorization to serve as the guards of the East Palace, and let them be stationed at the Changlin Gate on the left and right sides of the East Palace, known as the Changlin Soldiers.

He also secretly asked Youyu Hou to take the lead to Dazhi, and mobilized 300 brave and elite cavalry from Youzhou from Luo Yi, the king of Yan, and placed them in various markets in the east of the East Palace, preparing to use them to supplement the low-level officers who served as guards in the East Palace, their plan is not small!

Yang Wengan, the governor of Gyeongju in Guannai, once served as a guard in the East Palace, and Jiancheng was close to him and treated him favorably, and privately asked him to recruit warriors and send them to Chang'an. Jiancheng also instructed Lang General Er Zhuhuan and Captain Qiao Gongshan to give armor to Yang Wengan; Let him always be ready to unleash at any time and eliminate his own threat. ”

Li Shimin's eyes flickered, and the iron-blooded monarch who had been fighting all his life quickly calmed down and said, "Fifth brother, I know that you are really thinking about me, and now you have something to teach me." ”

Cheng Zhijie said with a smile: "I will bring Du Ruhui, Second Brother Qin, Duan Zhixuan and Zhang Liang, and they will enter your Tiance Mansion in disguise to help you."

I think Luoyang has a superior and convenient location, I will lead someone to capture Luoyang, and if you make any mistakes, come to me in Luoyang. ”

Li Shimin nodded in agreement, so Cheng Zhijie explained two sentences, and left alone, while Qin Qiong and others stayed to help Li Shimin.

Li Shimin and Liu Heimin confronted each other for more than 60 days, and Li Shimin had already expected that Liu Heimin's army would run out of food and grass, and in the absence of food supplies, he would come and attack the Tang army at the risk of death.

So Li Shimin sent people to build a weir to intercept the river water in the upper reaches of the river. On March 26, Liu Heimin led more than 20,000 soldiers across the river to attack the Tang army. Li Shimin first sent light cavalry to meet the battle, and then personally led an elite cavalry to meet Liu Heimin.

The battle between the two sides lasted until the evening, when Liu Heimin was desperately resisting the Tang army, the upper reaches of the river burst the embankment, Li Shimin's cavalry suddenly retreated, and the flood suddenly flooded Liu Heimin's army.

Liu Heimin's first defeat was to be flooded by Niutong, and the second time he used the water to block Li Shimin and kill Yin Kaishan, but this time he was defeated on the water again.

Under such circumstances, Li Shimin, of course, would not tolerate mercy, and led the army to catch up, eliminating Liu Heimin's forces in one fell swoop, and killing tens of thousands of people; Captured the entire territory of Hebei. Liu Heimin fled to the Turks with only more than a thousand people.

Li Shimin didn't care about dealing with the affairs of Hebei, and hurriedly returned to the city, of course, when he went back, there were more Du Ruhui, Qin Qiong, Duan Zhixuan and Zhang Liang who had already changed their faces; Of course, this part of Luo Yi's elite, including Zhang Gongjin and Qin Yong, was also brought back to Chang'an by him.

Li Shimin led the team back to Chang'an, and Li Yuan suddenly found that he had no seal on this son, so he had to go out again to greet him to sign his grace; and allowed him to expand the size of the Tiance Mansion.

Li Shimin took the opportunity to say that he had been busy with military affairs for so many years and was lacking in literature, and wanted to set up a literature museum to hire a world-famous Confucian to teach him literature and the way of sages.

Li Yuan was overjoyed when he heard this, and immediately agreed to his request. After Li Shimin thanked him, he recruited scholars from all over the world to establish the Literature Museum, and blatantly recruited Du Ruhui into the Literature Museum, the head of the eighteen bachelors of the Literature Museum.

Li Jiancheng and Li Yuanji were stimulated again, and Li Yuanji complained vigorously that his brother didn't start early; Li Jiancheng was upset and regretted, and his hatred for Li Shimin grew stronger, and he slowly forgot his brotherhood.

"In the future, it will depend on the third brother, whatever you say, we will do it."

Li Yuanji said: "Okay! It's not too late to make amends, although the eldest brother can rest assured; Just listen up! ”

As a result, Li Yuanji had not yet acted, and suddenly someone in the palace rumored that he had met him. Li Jiancheng didn't dare to delay and hurried to see Li Yuan. As a result, when he got there, he found that Dazhi had been arrested, and the sweat on his head was dripping down.

Li Yuan had a gloomy face, reprimanded him fiercely, and then asked him to dismiss the troops and go home to reflect on himself; At the same time, Dazhi was exiled to Shanzhou.

Li Jiancheng returned to the mansion and hated Li Shimin even more, and his murderous intent became more and more intense.

At this time, Tiance Mansion was attacking everywhere, Zhang Liang used the intelligence network of the Great Demon Kingdom to capture Li Jiancheng's Lang General Er Zhuhuan and Captain Qiao Gongshan in Youzhou at once, and seized both the stolen goods, and also seized the armor they were going to give to Yang Wengan.

At the same time, Zhang Liang rebelled against a man named Du Fengju from Yang Wengan's subordinates and sent them to Li Yuan together; Let them denounce and instruct Yang Wengan to raise troops, and let him echo with himself inside and outside.

Li Yuan was furious, and under the pretext that there was something else, he summoned Jiancheng with a handwritten edict and asked him to go to Renzhi Palace.

Li Jiancheng knew that the eyeliner in the palace was not good, so he came to report it one step earlier. Li Jiancheng was frightened when he heard this, and he didn't dare to go, so he urgently summoned everyone to come and discuss.

Xu Shimo, the prince's housekeeper, persuaded him to occupy the capital and send troops to start an incident; Zhao Hongzhi, the chief secretary of Zhan Affairs, thought that there were too few soldiers and horses in his hands to make it difficult to succeed, and persuaded him to remove the prince's car and driving uniform, remove the entourage, and go to the Tang Emperor to admit responsibility.

Li Jiancheng finally decided to go to Renzhi Palace to plead guilty. Before he completed the sixty-mile journey, he left all his officials in the fortress left by Mao Hongbin in the Northern Wei Dynasty, and he only led more than ten people to ride to see his father.

Li Jiancheng kowtowed to his father, confessed his guilt, and his body suddenly exerted force, and he fell out and almost fainted.

Li Yuan's anger still did not disappear, pointing at Li Jiancheng and scolding, and almost ordered to take away his crown prince.

That night, Gaozu imprisoned him in a tent, gave him wheat and rice to satisfy his hunger, asked Chen Fu, the eunuch in the palace, to guard him, and sent Si Nongqing Yuwen Ying to summon Yang Wengan quickly.

Yu Wenying is also Li Jiancheng's person, he came to Gyeongju and told Yang Wengan about the situation. So Yang Wengan rebelled.

Li Yuan was furious and sent Qian Jiulong, the general of Zuo Wuwei, and Yang Shidao, the governor of Lingzhou, to attack Yang Wengan.

As soon as the order was handed down, Li Yuan summoned King Shimin of Qin to discuss the matter. Li Shimin said: "Yang Wengan, this kid dares to do such an arrogant and rebellious act, thinking that his subordinates in the shogunate should have captured and killed him." His little men and horses are difficult to achieve, and it is enough to send a general to crusade against him. ”

Li Yuan shook his head and said, "It can't be like this. Yang Wen's work is related to the completion of the project, and I am afraid that there are many people who respond to him. You'd better go in person, and when you return, I will make you prince." I don't want to follow the example of Emperor Wen of Sui to kill my own son, and then I will be demoted to the king of Shu. Shuzhong's army is weak, if he can serve you in the future, you should save his life; If he refuses to serve you, it will be easy for you to arrest him. ”

Li Shimin's heart moved, pretending that he had no intention of taking the throne, and left the palace to gather people to go to Gyeongju to arrest Yang Wengan.

Because the Renzhi Palace was built in the mountains, Li Yuan was worried that the rebels would suddenly attack, so he led the army as a guard to drive out of the mountain from the south overnight.

When they walked dozens of miles, the officials belonging to the prince's east palace arrived one after another, and Li Yuan ordered them to form a team of thirty people, and then assigned troops to surround and guard them. The next day, Li Yuan saw that all the subordinates of the East Palace had been captured, and he did not resist excessively, so he returned to Renzhi Palace.

After Li Shimin set off, Li Yuanji and the harem concubines took turns to intercede for Li Jiancheng, and Pei Lian Feng Deyi contacted the ministers who were inclined to Li Jiancheng in the foreign court to try to rescue Jiancheng. So, Li Yuan changed his original intention and asked Li Jiancheng to return to the capital to stay.

Li Yuan only blamed him for his fault for causing the relationship between his brothers to be unharmonious, and also put the blame on the crown prince Zhongyun Wang Gui and Zuo Wei Ting; At the same time, he blamed General Tiance's army Cao for joining the army, and Du Yan did not assist Li Shimin well. In this way, they each fought fifty boards and exiled them to Shanzhou.

Yang Wengan's cavalry took the lead in capturing the defenseless Ningzhou, driving the plundering officials and people out of the city and occupying Baijiabao.

After the army of King Shimin of Qin came to Ningzhou, Yang Wengan's henchmen were so frightened that they all broke up overnight.

On the fifth day of the seventh month, Yang Wengan was killed by his own men, and his head was transported to the capital. Li Shimin captured Yu Wenying and killed him.

Although Yang Wengan's rebellion did not deal a blow to the Tang Dynasty, it did strain the relationship between Li Jiancheng and Li Shimin. At the same time, Li Yuan once again lost his trust in Li Shimin, which also increased Li Shimin's dissatisfaction with his father, and also broke his father's mind to change his mind and canonize himself as the crown prince.

During this period of time, the people of the prince's mansion had the upper hand, but the crown prince Li Jiancheng and the king of Qi Li Yuanji secretly accumulated strength, and through the concubines and his subordinates, they kept blowing the wind to Li Yuan, saying that the real power of Li Shimin's Tiance Mansion was too strong, and the generals under his command were also unruly, and it was inevitable that there would be trouble in the future.

Li Yuan also secretly regretted it in his heart, and wanted to take back part of Li Shimin's rights, but Li Shimin was a man of temperament, where could he bear this kind of grievance; At that time, he had a big quarrel with his father, and Li Yuan couldn't get off the stage.

Since then, Li Yuan has been even more disgusted with Li Shimin, and he has not thought about changing the crown prince again. At this time, Liu Heimin, who had fled to the Turks, made a comeback again, and Li Yuan thought that Li Shimin's last suppression was not good and severely reprimanded him.

Li Jiancheng's crown prince Zhongyun Wang Gui persuaded the prince: "King Qin's achievements cover the world, and the inside and outside return to the heart; And His Royal Highness was only made the crown prince because of his old age, and he has no great merit to subdue the world. Now that Liu Heimin's troops are scattered and fled, there are less than 10,000 people left, and there is a lack of food and materials, if the army is used to advance, the momentum is like a devastating and decaying, His Royal Highness should personally attack to gain merit and fame, and take the opportunity to make friends with the heroes of Shandong, maybe he can keep his position. ”

Li Jiancheng then asked his father to lead troops to the battle, and Li Yuan naturally agreed. Li Yuan issued an edict ordering the crown prince Li Jiancheng to be the marshal of the march of Daxingtai and Shandong Province in Eastern Shaanxi Province, and the prefectures south and north of the Yellow River were to be disposed of by Jiancheng, and he had the right to act randomly and let him lead his troops to crusade against Liu Heimin.