There was a time-travel novel called " Transmigrated to Li Chengqian's Son and Blocked Li Shimin ", which told the story of the protagonist transmigrating to the Tang Empire and becoming Li Chengqian's son, Li Xiang and Li Shimin. In this novel, Li Chengqian was about to be deposed, but his son, Li Xiang and Li Shimin, stepped forward and showed his smart and brave side. However, detailed information about Li Chengqian's specific achievements and performance was not provided in the search results. Therefore, the search results did not provide a clear answer to the specific situation of Li Chengqian and Li Shimin who had transmigrated to the Great Tang.

Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. His fate was closely related to Li Shimin. Li Shimin ascended the throne after the incident at Xuanwu Gate and appointed Li Chengqian as the Crown Prince. He hoped that Li Chengqian would become a good Emperor and ensure the stability of the Li family. Li Shimin had poured a lot of effort and resources into cultivating Li Chengqian, and he attached great importance to his education. Li Chengqian was also a very obedient child. He worked hard to be a qualified Crown Prince and was praised by the officials. However, Li Chengqian's fate was far from satisfactory. He was deposed as Crown Prince and executed, probably because of his plot against Hou Junji. Li Chengqian's destiny was full of trickery and tragedy.
Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. After Emperor Taizong of the Tang Dynasty ascended the throne, he was conferred the title of Crown Prince. When he was young, he was loved by his father and received the support and guidance of Lu Deming, Kong Yingda, Wei Zheng, and others. However, as he grew older, his behavior became bad. He was not loyal to his father and even sent assassins to assassinate his teacher. He had a conflict with his younger brother, Li Tai, and later conspired with others to assassinate Li Tai. Under the efforts of Emperor Taizong of the Tang Dynasty, he was deposed as a commoner and exiled to Qianzhou. After Li Chengqian passed away in Qianzhou, he was buried with the etiquette of the Duke of the State. As for the specific cause of his death, the search results did not provide relevant information, so it was impossible to know.
" Transmigration to Li Chengqian's Son and Beginning to Fight Li Shimin " was a novel about transmigration. It told the story of the protagonist transmigrating to the Tang Empire and becoming Li Chengqian's son, Li Xiang and Li Shimin. This novel was meticulously written by the author, Brother Bao, and received the support of many readers. In the story, Li Chengqian was about to be deposed, but his son, Li Xiang and Li Shimin, stepped forward and showed his smart and brave side.
'Crossing the Great Tang, Li Ke, Enraged Li Shimin' was a novel about the Third Prince of the Great Tang, Li Ke. Li Ke had done a lot of brainless things through the check-in system, which made his father, Li Shiming, very angry. In the novel, Li Ke tried on a dragon robe, which caught Li Shimin's attention. However, the specific plot and story development were not mentioned in the search results provided.
'Crossing the Great Tang, Li Ke, Enraged Li Shimin' was a novel about the Third Prince of the Great Tang, Li Ke. Li Ke had done a lot of brainless things through the check-in system, which made his father, Li Shiming, very angry. In the novel, Li Ke tried on a dragon robe, which caught Li Shimin's attention. However, the specific plot and story development needed to be read in full.
Li Shimin and Li Chengqian were father and son during the Tang Dynasty. Li Shimin was Emperor Taizong of the Tang Dynasty, and Li Chengqian was his eldest son. Li Shimin had placed great expectations on Li Chengqian and began to cultivate his talent and education when he was young. Li Chengqian had shown outstanding talent when he was young and was conferred the title of Crown Prince. He was also given special attention and love by his father. However, as time passed, Li Chengqian's behavior gradually became absurd and unruly. He indulged his interests and energy, liked hunting, and enjoyed a luxurious life. This caused Li Shimin to lose confidence in him and eventually abolished his position as Crown Prince. Li Chengqian even tried to launch a rebellion but failed. As for their specific ending and subsequent developments, the information given so far was not enough to give a clear answer.
" Thunder of the Great Tang " was a traditional storytelling broadcast by the famous storytelling artist, Mr. Shan Tianfang. It told the story of Emperor Taizong of the Tang Dynasty, Li Shimin, who succeeded to the throne. In order to defeat the invasion and harassment of King Baokang of the Red Cliff of Hami Khanate and the remnants of the Sui Dynasty, he led his army to the west. With the help of Cheng Yaojin, Xu Maogong, Yuchi Gong, Hou Junji, Luo Cheng, and the other heroes, Li Shimin had endured hardships and fought for ten years. In the end, he defeated the enemy, stabilized the Great Tang, and ushered in the golden age of Zhenguan. This storytelling was famous for its vivid characters, winding and thrilling plots, and humorous language. It was regarded as one of the best works of Mr. Shan Tianfang's dozens of traditional storytelling works. As for the other commentaries about Li Shimin, there was no mention of it in the information given so far.
Li Chengqian (619 - 645 January 5) was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. His ancestral home was Longxi Chengji (now Qin 'an County, Gansu Province). He was a minister of the imperial clan of the Tang Dynasty, and his mother was Empress Wende. During the reign of Emperor Wude, he was conferred the title of Prince of Zhongshan. Li Chengqian was smart and kind, but because of his leg disease, he could not move. After he learned that the King of Wei, Li Tai, wanted to fight for the throne, he became more and more arrogant and disrespectful to his teachers. In the 16th year of Zhenguan (642), after his failed attempt to assassinate Li Tai, he plotted with Li Yuanchang, the king of Han, Du He, the emperor's son-in-law, and Hou Junji, the duke of Chen, but the plan was exposed. In order to protect Li Chengqian, Emperor Taizong of the Tang Dynasty abolished his status as the crown prince and exiled him to Qianzhou. After Li Chengqian's death, his grandson Li Shizhi became the prime minister and posthumously presented him as the governor of Jingzhou and the prince of Hengshan. He was also buried in Zhaoling.
Li Chengqian (619-January 5, 645) was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. His mother was Empress Zhangsun. After Emperor Taizong of the Tang Dynasty ascended the throne, he was named Crown Prince. Because of his intelligence and benevolence, he was favored by his father. However, Li Chengqian suffered from leg disease and was unable to move. He pretended to obey his father and was disrespectful to his teacher. He had even tried to assassinate his brother, Li Tai, but failed. As his behavior became increasingly uncontrollable, Emperor Taizong of the Tang Dynasty finally abolished his status as Crown Prince and exiled him to Qianzhou in order to protect his family and country. After Li Chengqian's death, he was posthumously awarded the title of Jingzhou Grand Governor and Hengshan Prince and buried in Zhaoling.