Chang'an Yankang Fang Wei Wang's Mansion, after the hard work of scholars Xiao Deyan, Jiang Yaqing, Xie Yan, Gu Yin and others, the long masterpiece "Gu Di Zhi" was finally compiled.

The Chronicles of the Territory is a monograph based on 10 provinces, 358 prefectures and 1551 counties in the Tang Dynasty, introducing the geography, customs and specialties of mountains and rivers in various places, and providing valuable basic information and data for the emperor's governance.

Li Tai, the king of Wei, was overjoyed, held a banquet to entertain the scholars and praised them, and then gave them to Li Shimin. Li Shimin read a few articles, and was also very happy, and ordered the "Chronicles of the Kuodi" to be collected in the harem library.

No matter what happened outside the palace, the martial arts people still insisted on reading and studying in the library every day, and this time they just read the "Chronicles of the Territory", and the administrative divisions and mountains and rivers of the Tang Dynasty are all known!

Li Shimin also sent Zhang Nei to the Wei Palace's mansion to read the consolation book, rewarded Li Tai with ten thousand pieces of silk and satin, and the bachelor Xiao Deyan and others were also rewarded. Soon, Li Tai's monthly supply and material supply were greatly increased, even exceeding the treatment of the crown prince Li Chengqian.

Li Chengqian's fall from grace is a long story, and the reason can be traced back to the fifth year of Zhenguan, when he had a serious illness, the nerves in his legs and feet were damaged, his muscles spasmed, and he faltered, and he relapsed again in the seventh year of Zhenguan and became lame.

Since then, Li Chengqian has felt that the eyes of the upper and lower people have changed when they look at him, and his psychological state and behavior have also begun to become strange, mainly in the following points:

(1) Imitating the customs and habits of the Turks, sometimes deceiving the corpse, letting the servants weep and sing songs around him, imitating the funeral customs of the Turks, cutting hair, cutting off faces, cutting ears, and shedding blood on the ground.

(2) In the face of the minister's seriousness, talking about loyalty and filial piety, hearing the master and the minister talk about examples and advice, he was moved to tears, but as soon as he returned to the East Palace, he played with the servants and blasphemed.

(3) Build pavilions and pavilions, luxurious and extravagant, poor and extravagant, reward the small and extravagant, and spend a lot of money.

(4) In the face of Li Chengqian's various extravagant and wasteful behaviors that did not conform to etiquette, his master Li Baiyao wrote "Praise Daofu", Yu Zhining wrote "Advice Yuan", and Kong Yingda wrote "Filial Piety and Yishu" to satirize, but he never changed his mind, changed his past wrongs, and even sent someone to assassinate Yu Zhining, but to no avail. Zhang Xuansu, the prince's right concubine, was admonished by Yan Jin, and Li Chengqian sent a household slave to whip him with a horse whip on his way to the early dynasty, and almost beat him to death.

(5) He once threatened to the group: "If the widow becomes the Son of Heaven, he will be extremely indulgent, and if anyone dares to admonish him, he will kill him, but if he kills a few hundred people, he will be honest and obedient." ”

At this time, seeing that Li Taijin's "Chronicles of the Universe" was further favored, Li Chengqian's psychology was out of balance, but he had nowhere to vent, so he set up banquets, singing and dancing all day long, and watched witchcraft and magic performances.

When watching singing, dancing and witchcraft performances, Li Chengqian especially liked the music boy of Taichang Temple and the Taoist priests Wei Lingfu and Qin Ying. Chengxin is a beautiful teenager who is good at singing and dancing, Li Chengqian snubbed the crown princess Su for him, and lay down with him, inseparable, and was suspected of engaging in the foundation.

There were Li Tai's eyes and ears in the East Palace, and Li Chengqian's various indecent words and deeds reached Li Tai's ears, and Li Tai chose the opportunity to send someone to tell him.

In the first month of the seventeenth year of Zhenguan, Li Shimin got a secret report about Xiangxin, and was very angry, and suddenly led the left and right guards into the East Palace to search, arrested Xiangxin, Wei Lingfu and Qin Ying and others, and took them out of the palace and killed them.

Li Chengqian believed that it was Li Tai who was informing, and became even more resentful, so he recruited the assassin Su Gan Chengji and more than 100 strong men to prepare to murder Li Tai.

Helan Chushi, a thousand cows in the East Palace, was the son-in-law of Hou Junji, the secretary of the ministry, and Li Chengqian ordered Helan Chushi to lead Hou Junji into the East Palace to discuss the plan, and Hou Junji simply persuaded Li Chengqian to rebel.

Li Yuanchang, the king of the Han Dynasty, also agreed to rebel, and said to Li Chengqian: "The servant once saw a beautiful woman beside the emperor, who was good at playing the pipa, and the matter was successful. The prince agreed.

Du He, the commander of the horses, also gave advice, saying: "There is a change in astronomy, and troops should be sent quickly in response, but His Highness said that he was critically ill, and the emperor would definitely come to visit him in person, and then ...... Hehe, you can get your will! ”

When Li Chengqian was plotting to launch the Second Xuanwumen Rebellion, Li You, the king of Qi, was also plotting against him, conspiring with his uncle Yin Hongzhi to rebel, and sent his staff Yan Hongxin to secretly recruit swordsmen.

The king of Qi, Quan Wanji, often violated Yan Zhizhi to restrict Li You's illegal actions, and Li You sent Yan Hongxin's brother Yan Hongliang to shoot Quan Wanji with a bow and arrow on the way.

Killing the imperial court officials without authorization, Li You had to raise troops to rebel, but his Qi soldiers Cao Du Xingmin refused to rebel and led troops to besiege Li You's residence.

On March 10, Du Xingmin captured Li You and imprisoned him in the east wing of the pavilion. Subsequently, Li You was escorted to Chang'an and died in the Inner Servant Province. Li You's biological mother, Concubine Yin De, was implicated and demoted to a concubine, and soon hanged herself. Bing Cao Du Xingmin was promoted to the assassin of Bazhou.

When the Criminal Department interrogated the case of Li You, the king of Qi, they found that they were implicated in the rebellion of Li Youji, so they detained him in Dali Prison and deserved death. On April 1, the foundation of Su Gan was changed and the crown prince Li Chengqian was accused of rebellion.

Li Shimin ordered the eldest grandson Wuji, Fang Xuanling, Xiao Yu, and Li Tao to participate in the case together with Dali, Zhongshu, and Menxia, and found that the rebellion was true.

Li Shimin asked the left and right courtiers: "How will Li Chengqian be disposed of?" The ministers didn't dare to be right, and the general affairs broke the embarrassment, and said: "Your Majesty is a loving father, and the prince will be good if he has to live his life!" ”

After the discussion of the monarch and the ministers, Li Chengqian was deposed as a concubine and imprisoned in the right leading army. Li Yuanchang, the king of the Han Dynasty, committed suicide at home, and the ministers who participated in the rebellion, such as Hou Junji, Du He, Li Anyan, and Zhao Jie, were all ambushed.

After Li Chengqian offended, Li Tai, the king of Wei, and Li Zhi, the king of Jin, were not idle.

Li Tai entered the palace every day to serve Aye, and he was very courteous, Aya was very happy, and the courtiers Cen Wenwen and Liu Xun took the opportunity to persuade the king of Wei to be the crown prince, but the eldest grandson Wuji asked the king of Jin.

Li Zhi basically didn't dare to see Wucai people anymore since he accepted the concubine, and he didn't feel safe writing notes, so he only ordered Chunlan and Qiu Ju to pass the word to Ah Hong and Ah Zi from memory, and then the martial arts people fed back again, so that they could exchange information and continue to keep in touch.

Seeing that Aya did not express his position immediately, Li Tai was worried that Aya would make Li Zhi the crown prince, so he went to the Wude Hall in private and said to Li Zhi: "You used to be friendly with Li Yuanchang, and Yuanchang has committed a capital crime, aren't you worried at all?" ”

Li Zhi's face changed, he pretended to be afraid, and immediately sent a message to the martial arts people to ask for a plan afterwards, and the martial arts people gave feedback: "Shiro is impatient and will lose, and Jiulang will win if he is calm!" Pretend to be sad in front of everyone, everyone doesn't ask or talk, and if you ask again and again, you say Shiro's words again! ”

So Li Zhi was worried and worried all day long in front of Aya, Li Shimin saw that his son's expression was wrong, and repeatedly asked the reason, Li Zhi began to shake his head and did not answer, and finally had to confess Li Tai's words and plates, Li Shimin was unhappy after hearing it.

On the same day, Li Shimin went to the Right Army's Mansion to visit Li Chengqian and reprimanded him in person.

Li Chengqian said: "Ergui is the prince, what else do you ask for? It's just that Li Tai has been calculating, so he had to discuss with the palace ministers how to protect himself. As a result, those who are unwilling teach their children to plot against them. If Ayeli Li Tai is the crown prince, then he will fall into his trap. ”

Li Shimin was silent for a long time before he said: "Li Taili, Cheng Qian, Li Zhi and Li Zhi do not exist, Li Zhili and Li Tai are all fine!" ”

The next day, Li Shimin's imperial Liangyi Palace was courted, and after the court meeting, he left the eldest grandson Wuji, Fang Xuanling, Li Tao, Chu Suiliang and Li Zhi, the king of Jin, and said: "I feel very sad and helpless that my sons have done such a ridiculous thing. Straight to the couch, the eldest grandson Wuji hurriedly stepped forward to hug him.

Li Shimin pulled out his saber again and wanted to stab himself, but Chu Suiliang quickly snatched the saber and handed it to Li Zhi. The eldest grandson Wuji asked the emperor who he wanted to appoint, and Li Shimin said: "I want to establish the king of Jin." ”

The eldest grandson Wuji said excitedly: "The minister respectfully obeys the edict; Whoever has any objections will be killed! ”

Li Shimin turned back to Li Zhi and said, "What are you doing in a daze?" Uncle promised to set you up, hurry up and thank you! Li Zhi hurriedly thanked the eldest grandson Wuji.

Li Shimin said again: "The public has agreed, I don't know what the officials of the foreign court mean?" ”

The eldest grandson Wuji replied: "King Jin is benevolent and filial, the heavens have been in the heart for a long time, please ask Your Majesty to summon the hundred officials, if there are different opinions, even if the ministers fail Your Majesty, the crime should be ten thousand deaths!" ”

Li Shimin then went to the Taiji Hall on foot, summoned the civil and military officials above the sixth grade, and said: "Li Chengqian is rebellious, and Li Tai is also very dangerous, and they can't stand." I want to choose all my sons as my heirs, who is suitable? Please make it clear. ”

The ministers all cheered: "King Ren Xiao of Jin should be established as the crown prince!" King Jin is benevolent and filial piety, and should be established as the crown prince! Li Shimin was very happy and relieved. On the same day, Li Tai, the king of Wei, was introduced into the Suzhangmen Gate and confined in Beiyuan.

On April 7, Li Shimin issued an edict to appoint Li Zhi, the king of Jin, as the crown prince, and personally enthroned the Chengtian Gate Tower, announced a general amnesty for the world, and granted three days of alcohol.

After Li Zhi became the crown prince, he continued to ask the martial artists for advice when he encountered doubts, continued to act according to the suggestions of the martial talents, studied hard in the Chongwen Hall of the East Palace, and dared to take responsibility in case of trouble.

For example, Li Shimin asked Li Zhi to often go out for sightseeing, horseback riding and archery, exercise, and not to read and write in the palace, talk about scriptures and Taoism, so as not to stunt his physical growth.

Li Zhi replied: "It's not a hobby to watch and practice shooting, but only to stay under Aya's knees and serve Aya!" Li Shimin was overjoyed, so happy that tears flowed out, and ordered a separate courtyard to be built on the side of the dormitory for Li Zhi to live in.

For another example, Li Zhi put on the table in order to increase the treatment of his brother Li Chengqian and Li Tai, saying: "Chengqian and Li Tai have only clothes with them, and their diet is not palatable. "It embodies the brotherly love.