Ying Ji (325 BC-2565438 BC) was the monarch of Qin during the Warring States Period. Won the surname, Ming Ji, also known as the king of Qin. Qin Wuwang's half-brother. Yan Yu was a hostage, returned to China after the death of King Wu, and succeeded to the throne in 306 BC. At the beginning of his tenure, his mother Xuan Empress was in power, and the aristocratic consorts were arrogant and the power was sidelined. In the forty-first year of Zhao Haoqi (266 BC), he took drastic measures to expel the aristocratic consorts who were authoritarian, depose the Empress Dowager and rectify the military discipline. Early, resourceful Wei Ran was appointed as prime minister and moved eastward day by day. "Everything in the world is going west." . Later, taking, as the phase, as the general, he adopted the strategy of distant attack, defeated the Han, Wei and Chu armies, seized the land of Deng, Wan and Hedong, captured the capital of Chu, established Nanjun, United with other countries to break Qi, and defeated Zhao army in Changping (now Gaopingbei, Shanxi), thus expanding the territory of Qin State and laying the foundation for the future reunification of Qin State.