The Qin Dynasty, as the first unified feudal dynasty in Chinese history, had a profound influence and significance despite its short duration. In the history of the Qin Dynasty, there were three emperors: Qin Shi Huang, Qin Er Shi, and Qin Wang Ziying. Qin Shi Huang, also known as Ying Zheng, is one of the famous monarchs in Chinese history. After years of warfare, he finally unified the six kingdoms and established the Qin Dynasty. Qin Shi Huang implemented a centralized system of power and promoted a series of reform measures, such as unifying weights and measures, writing, and laws, which had a profound impact on Chinese history. However, Qin Shi Huang's reign was also accompanied by cruelty and tyranny, as he suppressed and persecuted dissidents and intellectuals, leading to social unrest and dissatisfaction. Qin Er Shi, also known as Hu Hai, was the son of Qin Shi Huang. During his reign, due to his young age and ignorance, he was manipulated by eunuch Zhao Gao, resulting in political corruption and people's livelihood decline. Qin Er Shi's reign further aggravated the internal contradictions and external pressures of the Qin Dynasty, leading to its gradual decline. Qin Wang Ziying, the last emperor of the Qin Dynasty, reigned for only 46 days and was deposed by the rebel army. Qin Wang Ziying's short reign marked the end of the Qin Dynasty and the rise of the Han Dynasty. In summary, the Qin Dynasty had three emperors: Qin Shi Huang, Qin Er Shi, and Qin Wang Ziying. During their reigns, the Qin Dynasty experienced a process from prosperity to decline. By understanding the emperors of the Qin Dynasty, we can gain a deeper understanding of the development and changes of Chinese history.

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