Overview
Qin Er Shi (; 230/222–October 207 BC) was the second emperor of the Qin dynasty from 210 to 207 BCE. The son of Qin Shi Huang, he was born as Ying Huhai. He was put on the throne by Li Si and Zhao Gao, circumventing Fusu, Ying's brother and the designated heir. Upon Ying's ascension, both Fusu and the popular general Meng Tian were killed on the orders of Li and Zhao, with Qin Er Shi's role in the assassinations remaining uncertain and controversial. A weak ruler, Qin Er Shi's reign was completely dominated by Zhao Gao, who eventually forced him to commit suicide. By the time of his death, the Qin Empire's power had lessened so much that his successor Ziying ruled as a king, not emperor.
Early life
Huhai was the personal name of the Second Emperor. Its Old Chinese pronunciation has been reconstructed as *Ga-gə′. Although his parentage was questioned by many historians including Sima Qian, they accepted Qin Er Shi as a member of the Kingdom of Qin's House of Ying. Huhai is the eighteenth son of Qin Shi Huang. As the youngest son, he was doted on by his father. It is not clear who his mother was, although most likely she was "The Hu (barbarian) princess" Hu Ji (胡姬). Although he is sometimes known as "Ying Huhai" according to the practice of modern Chinese names, the ancient custom was not to combine the names in this way: his personal name never appears in combination with Ying, Zhao, or Qin. From an early age, Huhai was apprenticed to the minister Zhao Gao to learn Legalism, by the decree of Qin Shi Huang.There is a strong possibility that Hu Ji was a princess from the Greco-Bactrian Euthydemid dynasty offered to Ying Zheng as an alliance gift from neighboring Gansu in 230 BC.
Ascension to throne: Second Emperor conspiracy
The first emperor, Qin Shi Huang, died during one of his tours of Eastern China in July–August 210 BCE at the palace in Shaqiu prefecture (沙丘平台). The announcement of his death was withheld until the entourage, which was accompanied by Premier Li Si and the imperial court, returned to the capital, Xianyang, two months later. Nevertheless, Huhai and Zhao Gao were aware of Qin Shi Huang's death and began plotting an internal intrigue.
The eldest son, Fusu, was supposed to be elected as the next emperor. However, Premier Li Si and Chief Eunuch Zhao Gao conspired to kill Fusu to get rid of Fusu's favourite general, Meng Tian, who was their court rival. They were afraid that if Fusu were enthroned, they would lose their power.
From Wikipedia (CC BY-SA 4.0).