Li Longji was Li Shimin's great-grandson.
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.
The emperor after Li Longji was Li Heng, Emperor Suzong of Tang Dynasty.
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 Longji and Princess Taiping were aunt and nephew. Li Longji was the third child of Princess Taiping's brother, Prince Xiang Li Dan, so Princess Taiping was Li Longji's aunt. They launched a palace coup together during Tang Long's coup. Li Longji successfully seized power, and Princess Taiping's power was also strengthened. However, Princess Taiping was later dissatisfied with Li Longji's power and planned to seize the throne, but was eventually eliminated by Li Longji. After Li Longji became the emperor of the Tang Dynasty, he ordered Princess Taiping to die. As for why Li Longji wanted to kill Princess Taiping and all her sons, the literature did not provide a clear answer.
There was no information about Li Shimin being overthrown by anyone. Therefore, I don't know who overthrew Li Shimin.
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 Longji's beloved concubine was Yang Yuhuan.