Just when the undercurrent was surging within the Tang Dynasty because of the dispute over the storage position, the Turks in the north came to attack again. This time, Li Yuan did not send Li Shimin, the first fierce man in the Tang Dynasty, but listened to Li Jiancheng's suggestion and let Li Yuanji take command of the northern expedition.

Now the prince's party has a good excuse to cut off the fierce generals of the Qin Palace. Li Yuanji transferred Cheng Zhijie, Wei Chi Jingde, Duan Zhixuan, and Qin Shubao to his own army and accompanied him on the northern expedition. With this move, all the elites of the Qin Palace's mansion were swept away.

At this critical moment, Li Shimin's first spy who was ambushed by Li Jiancheng's side began to play a role. The prince's mansion led Wang Hui to secretly report to Li Shimin, "The prince conspired with Yuanji to send someone to kill you when he set out for Li Yuanji's expedition." Then he told the emperor that you had died of illness and forced the emperor to abdicate. Go back and bury Wei Chi Jingde and the others alive, hurry up and find a way! ”

Li Shimin hurriedly discussed with the eldest grandson Wuji and others, and Sun Wuji naturally persuaded him to strike first. Li Shimin still couldn't make up his mind because of his brother's cannibalism, and everyone shouted that if they didn't make a move, they would all leave Li Shimin and find another way to make a living.

"Why don't you shake a hexagram and see if it's evil or good?" Li Shimin suddenly had a very funny idea. As soon as everyone remembered the hexagram, they saw a person hurriedly walking in outside, but it was Li Shimin's staff Zhang Gongjin, who saw that Li Shimin was about to shake the hexagram, snatched the turtle shell and threw it to the ground, and said angrily: "Everyone is in a hurry to smoke, you still come to this set of feudal superstitions." Fortune telling is used to solve doubts, what doubts are there in this situation now? Is it unlucky, can you still stop doing it? ”

What Zhang Gongjin said is very reasonable, and now he is ready to send it. Li Shimin finally made up his mind, "Go and get Lao Fang and Lao Du back." ”

Seeing that Li Shimin had been hesitating, the two angrily rejected Li Shimin's call. Li Shimin was furious when he heard this, and said to Wei Chi Jingde: "Are these two boys going to betray me too?" You take my sword and go, and never come back, but you come to see me. When Fang Xuanling and Du Ruhui saw that Li Shimin really wanted to fight with the prince this time, they returned to the Qin Palace's mansion with Jingde.

It just so happened that at this time, Fu Yi, an official who observed celestial phenomena, played Li Yuan secretly, "Taibai sees Qin, and the king of Qin should have the world." "The astrological thing seems to be quite accurate. After Li Yuan listened to Fu Yi's secret recital, he didn't know what to think, and as soon as his head was hot, he called Li Shimin to the palace and told him about it.

For a long time, the crown prince King Qi has been slandering Li Shimin, and Li Shimin finally has a chance to fight back in front of his father today. He shot the first bullet and said to Li Yuan, "Built, Yuanji fornication harem." "This matter is something Li Yuan didn't expect, the harem is all Li Yuan's women, wouldn't the harem commit adultery with the stepmother, this kind of incest is to kill the head.

Li Shimin then fired a second bullet, "I didn't do anything to be sorry for my brother, but the crown prince Qi has always wanted to kill me, isn't this revenge for Wang Shichong Dou Jiande?" If I am really killed, I will never see you again, Dad, and when I go underground, how can I face King Dou and the others. ”

The first bullet aroused Li Yuan's anger, and the second bullet aroused Li Yuan's family affection. After listening to Li Shimin's words, Li Yuan was completely shocked, looked at Li Shimin and said, "Come early on a cloudy day and confront him face to face." ”

That's what Li Shimin wants. At this time, it didn't matter whether the crown prince Qi was adulterous in the harem or not, and if the plan went well, it would be impossible for them to see Li Yuan again. What Li Shimin wants is such an opportunity.

That night, Li Yuan's concubine Zhang Jieyu informed Li Jiancheng of the conversation between Li Shimin and Li Yuan. Li Jiancheng didn't realize that the danger was imminent, but Yuan Ji felt threatened by Li Shimin. He suggested that the next day concentrate the troops of the Qi Palace's palace in the East Palace, and observe the situation under the pretext of not going to the hospital. Li Jiancheng insisted on entering the palace to meet Li Yuan, he always thought that the guards who had the guards of the East Palace would not have problems in the palace, but fate played a very gray joke on him.

On the morning of the fourth day of the sixth lunar month, Li Shimin took the eldest grandson Wuji and others into the Xuanwu Gate and set up an ambush. According to the system of the Tang Dynasty, the palace was guarded by full-time guards, and it was impossible for other armies to enter the palace through the Xuanwu Gate. At this time, a key figure appeared, he was Chang He, the guard of the Xuanwu Gate.

Chang He was ambushed here by Li Shimin two years ago, and from this chess piece that has been buried here for two years, it can be seen that Li Shimin has coveted the throne for a long time. Chang He not only followed Li Shimin, but also followed the crown prince Li Jiancheng to go on the expedition. But in the seventh year of Wude, he was secretly bribed by Li Shimin, included in his camp, and was placed on the key part of Xuanwu Gate.

However, Li Jiancheng knew nothing about this. He would never have thought that Li Shimin would control the central gate of imperial politics two years ahead of schedule.

Jiancheng Yuanji's guards did not enter the Xuanwu Gate, and as soon as the two entered the Xuanwu Gate, they found that the surrounding situation was a little wrong, and immediately turned their horses' heads to run. Li Shimin called the two of them, and Li Yuanji took out his bow to shoot Li Shimin, but he didn't pull it away after pulling it several times. And Li Shimin shot Li Jiancheng with an arrow, and Li Jiancheng was finished on the spot.

Wei Chi Jingde rushed over from the ambush with more than 70 people, and Li Yuanji fell off his horse in a hurry. Li Shimin's horse was frightened and ran up a small forest and was caught by branches. Seeing that there was an opportunity, Li Yuanji ran over and grabbed Li Shimin's bow, wanting to strangle Li Shimin. was killed by Wei Chi Jingde, who caught up.

Li Yuanji did this quite stupidly, Li Shimin shot Li Jiancheng with his shot, and saw the enemy attack more than 70 people. At this time, it was important to save his life, but he killed Li Shimin in the past with an enemy of seventy, isn't this a yin to send him to death? Li Yuanji is also a general who has led troops to fight, and he has no basic common sense, so it can be seen that he died unjustly.

The soldiers and generals who came with the East Palace were all outside the Xuanwu Gate, and when they heard the sound of killing inside, Feng Yi, Feng Li, and Xue Wanche organized more than 2,000 people to attack the Xuanwu Gate. Li Shimin's subordinate Zhang Gong was so strong that he retreated alone to resist. Coupled with the help of Chang He, the guard of the Xuanwu Gate, he resisted the attack of the soldiers of the East Palace. It wasn't until Wei Chi Jingde appeared with the heads of Li Jiancheng and Li Yuanji that these East Palace guards dispersed.

Wei Chi Jingde dispersed the guards of the East Palace, and on Li Shimin's order, he hurriedly found Li Yuan. Li Yuan was startled when he saw Wei Chi Jingde, who was covered in blood and wearing armor and holding a spear, and asked, "Who are you and what are you doing here?" "You must know that it is a capital offense to be armed in the palace. Wei Chi Jingde was not afraid, and said: "The crown prince and the king of Qi have been killed by the king of Qin, and the king of Qin is afraid of alarming the emperor and sent me to defend you." ”

Ladies and gentlemen, where is this to defend the emperor? This yin is here to force the palace. Why did Li Shimin send Wei Chi Jingde to see Li Yuan, looking at the entire Xuanwumen bloody case, Li Shimin shot Li Jiancheng, and Wei Chi Jingde killed Li Yuanji, saying that Yin Wei Chi Jingde was ruthless and unsympathetic, and he didn't even blink an eye when Li Shimin's own brother was killed.

Li Shimin launched the Xuanwumen Bloody Case, why didn't he go to see Li Yuan in person, because he didn't know what kind of attitude Li Yuan would have. Send Wei Chi Jingde to see Li Yuan, if Li Yuan is slightly dissatisfied, it is estimated that the end will be the same as Li Jiancheng. Li Shimin has already killed his brother, are you still afraid of adding a charge of killing his father? And Wei Chi Jingde is the best killer.

When Li Shimin sent Wei Chi Jingde, he would definitely tell him one sentence, "If you don't accept it, you will be killed!" Without Li Shimin's instructions, Wei Chi Jingde would never dare to see Li Yuan so boldly and arrogantly.

Li Yuan is a smart person, seeing Wei Chi Jingde's appearance, he knows that the situation is out of control, if he is not wise, the end is likely not to be good. He asked his close ministers Xiao Yu, Chen Shuda and others, these people knew that the crown prince Qi was dead, and there was no need to go to them to accompany them to the funeral, and they all suggested that Li Shimin be named the crown prince. Li Yuan got off the donkey and said, "Very good, I have long wanted to give the state affairs commission to the King of Qin." ”。

At this time, Li Shimin was summoned, and Li Shimin lay on Li Yuan's chest and cried. This false mercy did not hide his true murderous intentions, and the eleven sons of the crown prince King Qi were all killed by Li Shimin, cutting off all the descendants of the two in one fell swoop.

Li Yuan saw that the general trend had gone, and three days later he made Li Shimin the crown prince, and passed the throne to Li Shimin on the eighth day of August, and on the ninth day of the first month, Li Shimin ascended the throne and began to officially control the Tang Empire.