How was Li Chengqian crippled?

The main reason why Li Chengqian was deposed was because he was suspected of rebellion. Li Chengqian suspected that Li Shimin intended to make Li Tai the Crown Prince, so he planned to strike first and try to assassinate Li Tai, but failed. After this incident was exposed, Li Shimin decided to abolish Li Chengqian's position as Crown Prince and imprisoned him in Qianzhou until his death. In addition, Li Chengqian's actions and his brother Li Tai's ambitions, as well as the opposition of the Imperial Court, were also one of the reasons why he did not inherit the throne. The specific details might need further information to confirm.

The main reason why Li Chengqian was deposed was because of his lack of virtue and his suspicion of rebellion. According to the records, Li Chengqian was smart since childhood and was loved by Li Shimin. He was also the first son of Empress Zhangsun, so Li Shimin had high expectations for him. However, with the appearance of Li Chengqian's foot disease, he began to feel inferior and indulged in the singing and dancing entertainment of the Eastern Palace. He even had an affair with a male partner. These actions made Li Shimin think that Li Chengqian was not suitable to become the monarch, so his attitude towards the Crown Prince became unclear and he supported his other son, Li Tai. In addition, Li Chengqian was also suspected of rebellion and attempted to assassinate Li Tai, but failed. In the end, due to these reasons, Li Shimin abolished Li Chengqian's position as Crown Prince and exiled him to Qian Prefecture.

The main reason why Li Chengqian was deposed was because of his lack of virtue and his suspicion of rebellion. Li Chengqian was smart and loved by Li Shimin since childhood, but with the appearance of his foot disease, he began to feel inferior and indulged in the singing and dancing entertainment of the Eastern Palace. In addition, he also had an affair with a male partner, Chenxin. These actions made Li Shimin think that Li Chengqian was not suitable to become a monarch. In addition, Li Chengqian was also suspected of rebellion and attempted to assassinate Li Tai, but failed. In the end, due to these reasons, Li Shimin abolished Li Chengqian's position as Crown Prince and exiled him to Qian Prefecture. Therefore, the reason why Li Chengqian was deposed as Crown Prince was mainly because of his immoral behavior and suspected rebellion.

The reason why Li Chengqian was deposed as the Crown Prince was mainly because he had lost his virtue and participated in the rebellion. His conduct was corrupt, indulging in wine, sex, and pleasure, wasting the country's financial and material resources. In addition, he also befriended some crafty people and listened to their instigation. These actions caused Li Chengqian to lose the trust and respect of his father and his subjects. He was no longer suitable for the role of heir, so he was abolished as the crown prince. The specific process of deposing the Crown Prince and the details of the incident were not mentioned in the search results.

The main reason for Li Chengqian's demotion was that he had lost his virtue and was suspected of rebellion. His conduct was corrupt, indulging in wine, sex, and pleasure, wasting the country's financial and material resources. In addition, he also befriended some crafty people and listened to their instigation. Li Chengqian also suspected that Li Shimin intended to make Li Tai the Crown Prince and tried to assassinate Li Tai, but failed. These actions made Li Shimin think that Li Chengqian was not suitable to be the monarch, so he abolished Li Chengqian's position as the crown prince and exiled him to Qianzhou until his death.

Li Chengqian suffered from leg problems when he was twelve and fourteen years old.

There was no clear record of how old Li Chengqian was when he became a cripple. The history books only mentioned that Li Chengqian suffered from leg problems at the age of twelve and fourteen, but did not specify what caused it. Later generations had several speculations about his lame leg. One thought it was hereditary because Li Chengqian's father, Emperor Taizong of the Tang Dynasty, and Empress Zhangsun also had leg problems. The other thought it was caused by his riding injury when he was young. However, these were just guesses. There was no conclusive evidence to prove the specific cause of Li Chengqian's leg. Therefore, there was no definite answer to the question of when Li Chengqian was crippled.

The reason for Li Chengqian's leg disability was not clearly recorded in the history books. There were many related theories, but there was no conclusion that most people agreed with. Modern medical research showed that there were two main causes of human limb disability: permanent limb damage caused by external factors and body tissue damage caused by internal diseases. According to historical records, before the 13th year of Zhenguan (639), there was no record of Li Chengqian being seriously injured by an accident (such as falling off a horse, assassination, etc.). Therefore, it was impossible to determine whether Li Chengqian's disability was caused by external factors or internal diseases. As for the specific reason for Li Chengqian's leg disability, there was no conclusive answer yet.

According to the documents provided, Li Chengqian was deposed as the Crown Prince in the 17th year of Zhenguan. However, no specific age information was provided, so it was impossible to determine the age at which Li Chengqian was crippled.

Li Chengqian was described as an absurd person. His absurd behavior was mainly reflected in the following aspects: he was lustful and playful without restraint; he engaged in cross-dressing and kept male pets; he killed his teacher and brother, and even planned to assassinate Li Shimin. Li Chengqian's absurd behavior was considered Li Shiming's responsibility as a father because Li Shiming did not educate his child well. Li Chengqian's absurd behavior caused him to be deposed as the Crown Prince. However, the details of Li Chengqian's absurd behavior were not clear.