At the beginning of the Spring and Autumn Period, there were more than 140 princes, and after years of annexation, only more than 20 remained. Among them, there were seven of the most powerful vassal states, namely Qi, Chu, Qin, Yan, Zhao, Wei, and Han, known by historians as the Seven Heroes of the Warring States.
During the Warring States period, the princes of various countries acted in separate ways and against each other, and the Zhou dynasty had been reduced to symbolic rulers. After that, the Zhou Dynasty was divided into three parts: the Western Zhou Principality, the Eastern Zhou Principality, and the Zhou royal family. In 256 BC, the Qin state conquered the Western Zhou principality, and after the death of the Eastern Zhou Dynasty emperor Zhou Nanwang, the Zhou royal family also perished.
After the Eastern Zhou Dynasty, the history of the entire Zhou Dynasty came to an end. The Zhou Dynasty existed for more than 790 years and had 37 monarchs. However, after the fall of the Zhou dynasty, the Qin state began to deploy plans to unify the country. In 230 BC, the Qin general Nei Envoy Teng attacked Korea and captured Han Wang'an, marking the end of Korea. Immediately afterwards, in 228 BC, the king of Qin attacked the state of Zhao, and Zhao Wangqian was captured, and the state of Zhao also perished. In 225 B.C., the king of Qin Jiang rushed to attack Wei, and after three months of the Yellow River water tank Daliang City, Wei surrendered to Qin and disappeared into the long river of history. In 223 BC, Qinjiang Wang Jian led an army of 600,000 to defeat the Chu army, forcing the Chu state to sue for peace with Yan and present the Yan Wang Seal, and the Chu state was also declared extinct.
In the same year that the Qin Dynasty fell, uprisings surged everywhere. After the news of Qin Shi Huang's death spread all over the world, Zhao Gao staged a coup d'état to force the incompetent Qin II to abdicate in favor of Ziying, and thus entered the era of Qin III. However, Zhao Gao's rule led to a society in which everyone was in danger, and the local officials continued to call on farmers to work without pay, and the people suffered unspeakably. Finally, in 209 BC, the uprising of Chen Sheng and Wu Guang broke out, and the people everywhere responded one after another and rose up.
In 207 BC, the struggle for hegemony between Chu and Han officially began. Xiang Yu defeated the main force of the Qin army, and the Qin general Wang Li and the Qin general Zhang Han surrendered. This is also the famous Battle of the Giant Deer in history. Subsequently, Liu Bang led his troops into the pass, and after reaching an agreement with Qin Ziying, he successfully forced him to surrender. The Qin Dynasty ended its existence for only 14 years.
This was an important period in Chinese history - the Warring States, the Qin Dynasty, and the era of Chu and Han competing for hegemony. This period was full of war, change, culture, and heroism, and was an indispensable chapter in Chinese history.