Which war in ancient China killed the most people?

1st place: in the 13th century, Mongolia's East Asian Continental War (Western Liao, Jin, Southern Song, Dali, Tuwan) * * * killed 8 million people.

In the course of the four-way conquest, Monggol Khan died, so expeditionary forces in all directions began to fight each other. The battlefields across Europe and Asia, the Persian Khanate of Persia and so on benefited to varying degrees.

2nd place: The Taiping Heavenly Kingdom War in the 19th century killed more than 7 million people.

The Taiping Heavenly Kingdom Movement was a peasant uprising against the feudal rule of the Qing Dynasty and foreign capitalist aggression initiated by a leading group composed of Hong Xiuquan, Yang Xiuqing, Xiao Chaogui, Feng Yunshan, Wei Changhui and Shi Dakai from Jintian Village, Guangxi, from the first year of Xianfeng in the Qing Dynasty to the third year of Tongzhi (1851 -1864). It was a large-scale anti-Qing movement in China in the middle of the 19th century. In 1864, Tianjing, the capital of the Taiping Heavenly Kingdom, fell, marking the failure of the movement.

3rd place: World War II in the first half of the 2th century, with 5 million deaths.

World War II (English: World War II or Second World War, WWII or WW2 for short) was referred to as World War II, and the war involved people from five continents. The war is divided into two major battlefields, namely Europe, North Africa and Asia-Pacific. It is the largest war in human history. From September 1, 1939 to September 2, 1945, the axis countries such as Germany, Italy and Japan and satellite countries such as Bulgaria, Hungary and Romania were the one side, and the anti-fascist allies such as China, the United States, Britain and the Soviet Union and the anti-fascist forces all over the world were the allies in the second global war. From Europe to Asia, from the Atlantic Ocean to the Pacific Ocean, 61 countries and regions, with a population of more than 2 billion, have been involved in wars, with a combat area of 22 million square kilometers. In the war, soldiers and civilians suffered more than 7 million casualties and lost more than $5 trillion.

4th place: In the first half of 17th century, 4 million people died in the peasant war of Ming Dynasty.

at the end of the Ming dynasty, class contradictions became increasingly acute, and natural and man-made disasters occurred constantly. At the end of the Ming Dynasty, due to the threat of Huang Taiji, the Ming government was forced to cut off the post station, and countless people were ruined, and Shaanxi was hit by drought, so people could not live. The peasant uprising in the late Ming Dynasty first broke out in northern Shaanxi. The poor land, backward production, serious taxes and corvee, and successive years of famine led to the peasant uprising. This uprising did not end until the reign of Shunzhi in Qing Dynasty, and it was called the peasant uprising in the late Ming Dynasty.