Li Ke's mother, Concubine Yang, was indeed a princess of the Sui Dynasty. And Concubine Yang was first the concubine of Li Yuanji, the king of Qi, after the Xuanwumen Change, Li Yuanji was killed, and Concubine Yang took advantage of the situation to throw herself into the arms of Li Shimin and became Li Shimin's concubine.
Li Ke's mother was an orphan of the Sui Dynasty, did he not become the emperor because of the blood of the Sui Dynasty?
Li Ke, who has always been regarded as the saddest prince of the Tang Dynasty, has amazing talents, is one step away from the throne, but has never been able to win the throne, and even was finally framed by the eldest grandson Wuji for participating in the rebellion of Fang Yiai, in 653, Li Ke, who was only 35 years old, was executed.
Li Ke was born in a prominent family, fused the three aristocratic bloodlines of Yang Sui, Li Tang, and Dugu, and inherited the deep royal genes of the Sui and Tang dynasties, which is rare in the ages.
His great-grandfather was one of the Eight Great Pillars of the Northern Zhou Dynasty, Li Hu, the Duke of Tang. His great-grandfather was the hereditary general of the Great Pillar State, the hereditary Duke of Tang Guo, and the Duke of Longxi County, and his great-grandmother was the Empress Yuanzhen, the fourth daughter of the Great Pillar State and the Great Sima Dugu Xin. His grandfather was Li Yuan, the founding emperor of the Tang Dynasty, and his father was Li Shimin, Taizong of the Tang Dynasty, who opened the "rule of Zhenguan".
His maternal great-grandfather was the founding hero of the Northern Zhou Dynasty, one of the eight pillars of the Sui State Duke Yang Zhong, his maternal great-grandfather was the founding emperor of the Sui Dynasty, Emperor Wen of Sui Emperor Yang Jian, and his maternal great-grandmother was Dugu Xin's seventh daughter Dugu Jialuo. His grandfather was Yang Guang, Emperor Yang of the Sui Dynasty. Her mother was Yang Guang's eldest daughter Yang, and later Li Shimin's Yang concubine.
In the history of the mainland, due to respect for the elder and the younger, the throne is inherited by the eldest son, and the son-in-law is the emperor's true son. Therefore, although Li Ke is excellent, nominally speaking, he is not competitive with Li Shimin's three sons-in-law, which is due to fate.
However, Li Chengqian was deeply despised by the second eldest Li Tai because of his improper style as an adult and his messing with male-male relationships, and Li Tai competed with Li Chengqian everywhere, making Li Chengqian's reputation worse and worse than Li Tai. Later, Li Tai tried to seize the heir, and Li Chengqian was forced to rebel, and was finally deposed by Li Shimin.
The snipe and the clam competed, the fisherman profited, and the third son, Li Zhi, became the only son-in-law who had no problems. But because Li Zhi is cowardly, Li Shimin thought of Li Ke, Li Ke is the eldest son of Shu, very brave, Li Shimin values him very much, saying that he is the most like himself among his sons, so he wants to pass on to him. However, this move was strongly opposed by the eldest grandson Wuji, saying that Li Ke was a concubine and the son of Concubine Yang of the previous dynasty, and could not be inherited in law and reason, so Li Shimin had to pass on the throne to Li Zhi. In the end, he was framed to death by the eldest grandson Wuji. The bloodline issue is just an excuse for the eldest grandson Wuji, as Li Zhi's uncle, I'm afraid the purpose is still for his nephew!
At that time, Li Ke was actually more suitable for Li Zhi than Gaozong Li Zhi.
First of all, Li Zhi is the son-in-law, the son of the eldest grandson, and he is more than Li Ke in terms of succession.
Second, Li Zhi is benevolent, but Li Ke is more domineering, if Li Ke is allowed to ascend the throne, it will inevitably repeat the tragedy of himself and Li Jiancheng's brothers, and even cause a bloody storm.
Third, Li Zhi's position as crown prince was supported by the court's ministers, including the eldest grandson Wuji.
Therefore, Li Ke did not become the emperor, which has a certain relationship with his Sui Dynasty blood, but it is mainly because of the difference between his concubines. Li Ke is the most expensive and capable of Taizong's sons, and Taizong knows it well. In his later years, he intended to make him the crown prince and his mother the queen. But it was strongly opposed by the eldest grandson family, and the above is just their excuse. Due to the great power of the eldest grandson in the middle of the court, in order to maintain long-term peace and stability in the future, Li Zhi had to be replaced.