The relationship between Li Shimin and Li Longji was that of grandfather and grandson. Li Shimin was Li Longji's great-grandfather. Li Shimin was the father of Li Zhi, Emperor Gaozong of Tang Dynasty, and Li Zhi was the father of Li Longji. Therefore, Li Shimin was Li Longji's grandfather, and Li Longji was Li Shimin's grandson. The relationship between them was of great significance in the Tang Dynasty's inheritance and family glory.

The relationship between Li Longji and Li Shimin was that of a great-grandfather and great-grandson. Li Shimin was the great-grandfather of Emperor Xuanzong of the Tang Dynasty. Li Shimin was the son of Li Zhi, Emperor Gaozong of Tang Dynasty, and Li Zhi was the grandfather of Emperor Xuanzong of Tang Dynasty. Therefore, Li Shimin was Tang Xuanzong's great-grandfather, and Tang Xuanzong was Li Shimin's great-grandson.
Li Shizhi and Li Longji were father and son. Li Shizhi was Li Longji's father. He was the father of Li Longji, Emperor Xuanzong of the Tang Dynasty. Although Li Shizhi died before Emperor Xuanzong ascended the throne, his influence had a profound impact on Emperor Xuanzong's rule. After Li Longji ascended the throne, he honored Li Shizhi as the Retired Emperor to show his respect and nostalgia.
Li Longfan and Li Longji were brothers. Li Longfan was the son of Emperor Ruizong of Tang, Li Dan, and Li Longji was Li Dan's younger brother.
Li Longji (September 8, 685-May 3, 762) was the seventh emperor of the Tang Dynasty, the grandson of Emperor Gaozong Li Zhi and Emperor Wu Zetian, and the third son of Emperor Ruizong Li Dan. His reign lasted the longest, from September 8, 712 to August 12, 756. Li Longji was wise, decisive, versatile, and good at music and calligraphy. He created the three years of Xiantian, Kaiyuan, and Tianbao, and carried out the reform of the military system, the establishment of military governors, the trust of eunuchs, and the confinement of kings. He established a ruling system with eunuchs as the core. However, in his later years, he doted on Yang Guifei and neglected the government. In addition, he made policy mistakes and put important officials such as An Lushan in important positions, which led to the outbreak of the An Lushan Rebellion and laid the foreshadowing for the decline of the Tang Dynasty. He died at the age of 78 and was buried in Tailing. Li Longji was also a writer and had left behind many works of poetry.
Li Chengqian was the eldest son of Emperor Taizong of the Tang Dynasty, Li Shimin. He was appointed as the crown prince and was highly anticipated and nurtured. Li Shimin had conflicting trust in Li Chengqian. As a father, he loved and trusted Li Chengqian very much, but as a monarch and minister, he was worried that he might do something disloyal. However, the specific information about the interaction and relationship between Li Chengqian and Li Shimin was not clear.
Li Chengqian was the eldest son of Li Shimin, Emperor Taizong of the Tang Dynasty. 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. 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 He's ancestor, Li Liang, was the uncle of Li Yuan, the Tang Gaozu. Li Shimin was Li Yuan's son, so Li He was a descendant of Li Tang's imperial clan. He and Li Shimin were of the same clan, but they lived in different eras. Li He's family had declined by his generation. While waiting for the TV series, he could also read the exciting content related to this site!
Li Longji and Princess Yuzhen were siblings during the Tang Dynasty. Princess Yu Zhen was the daughter of Emperor Ruizong of Tang, and Li Longji was her brother. Although there were not many details about their relationship, it could be seen that they had a good family relationship.
Li Chengyin and Li Shimin were not directly related. Li Chengyin was the fifth son of Li Ze, Emperor of the Feng Dynasty, while Li Shimin was the second son of Li Yuan, Emperor Taizong of the Tang Dynasty. There was no direct relationship between father and son or brother. Therefore, the relationship between Li Chengyin and Li Shimin could not be determined.