The order of the Tang Dynasty princes could not be determined based on the search results provided.
The Crown Princes of the Tang Dynasty were Li Jiancheng and Li Chengqian. Li Jiancheng was the founding prince of the Tang Dynasty and the eldest son of Li Yuan, the Tang Gaozu. He participated in the war of conquering the east and the west in the early days of the Tang Dynasty. After being appointed as the crown prince, he assisted Li Yuan in handling government affairs. However, his younger brother Li Shimin's ability and ambition surpassed him, which eventually led to him being killed by Li Shimin in the Xuanwu Gate coup. He was only 38 years old. Li Chengqian was the eldest son of Li Shimin, Emperor Taizong of the Tang Dynasty. After being appointed as the crown prince, he showed good governance skills. However, he was worried that Li Tai would seize the throne and be deposed as the Crown Prince, so he planned the change of Xuanwu Sect, but it did not succeed and he was deposed as a commoner. The above information was related to the Crown Prince of the Tang Dynasty.
In the Tang Dynasty, the crown princes who succeeded to the throne were Li Yu, Li Heng, Li Longji, Li Longji, and Li Shimin.
In the Tang Dynasty, there were two crown princes who successfully succeeded to the throne. The first was Li Yu, the crown prince of Li Heng, who succeeded the throne and became Emperor Shunzong of Tang. The second was Li Ke, the crown prince of Emperor Gaozong of the Tang Dynasty. He succeeded the throne and became Emperor Xuanzong of the Tang Dynasty.
Tang Dynasty: The Beginning of the Self-Deposed Crown Prince was a time-travel novel. It told the story of a 21st-century teenager who accidentally time-traveled to become the Tang Dynasty's Crown Prince, Li Chengqian. In this novel, Li Chengqian requested to depose himself as the Crown Prince, which shocked the court. However, other than that, the search results did not provide any more specific plot or content about the novel.
Li Chengqian (619 - 645 January 5) was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. He was born in Chengji, Longxi (now Qin 'an County, Gansu Province). As a minister of the imperial clan of the Tang Dynasty, Li Chengqian was granted the title of Prince of Zhongshan. When he was young, he had shown his intelligence and was appointed as the crown prince by Emperor Taizong of the Tang Dynasty. Li Chengqian was doted on by his father and received guidance from Lu Deming, Kong Yingda, Wei Zheng, and other famous officials. However, as he grew older, Li Chengqian became rebellious and misbehaved. He was criticized by the ministers. After his attempt to assassinate Li Tai failed, he plotted with others. After the matter was exposed, he was deposed as a commoner and exiled to Qian Prefecture. Finally, Li Chengqian died of depression in the 19th year of Zhenguan and was buried with the etiquette of the state.
Li Hong was the Crown Prince of the Tang Dynasty and the first Crown Prince to be conferred the title of Emperor. He was the eldest son of Tang Gaozong, Li Zhi, and Wu Zetian. Li Hong was filial and benevolent since childhood, and after becoming the prince, he sympathized with the people's feelings. He once wrote to Gaozong to amend the unreasonable law and pleaded for mercy for his two convicted sisters, which was deeply loved by Gaozong. However, Li Hong suddenly died at the age of 23, and the cause of his death was controversial. Some people believed that he was poisoned by Wu Zetian, but some scholars believed that he died of consumption. Emperor Gaozong was deeply saddened by this and made an exception to posthumously grant Prince Li Hong the title of emperor, posthumous title "filial piety", and buried him in Gongling according to the etiquette of the emperor.
The crown prince of Li Shimin of Tang Dynasty was Li Chengqian.
Tang Dynasty: The Beginning of the Self-Deposed Crown Prince was a time-travel novel. It told the story of a 21st-century teenager who accidentally time-traveled to become the Tang Dynasty's Crown Prince, Li Chengqian. In this novel, Li Chengqian requested to depose himself as the Crown Prince and led more than 20 cavalry to flee the Western Regions. This action shocked the imperial court.
The Crown Prince Li Hong of the Tang Dynasty had the Pei family as his wife.
The novels of the First Crown Prince of the Great Tang could be read for free on many websites, such as Tang Yu, the First Crown Prince of the Great Tang, and Wind Rises the Dragon City: The First Crown Prince of the Great Tang. This novel told the story of a special military doctor, Tang Yu, who accidentally transmigrated to the Tang Empire and became the crown prince. He was faced with the challenges of sycophants and the invasion of powerful enemies, but he solved the internal and external problems with modern black technology.