Here is an AI summary of Chinese Dynasties longevity... You can 300 year they lasted and ours Republican is near 250 years...
While the notion that Chinese dynasties typically lasted around 250 years is a common simplification, it's inaccurate to characterize all dynasties as such. Some dynasties, like the Zhou, lasted for centuries, while others, like the Qin, were short-lived.
Here's a more nuanced look at Chinese dynastic history:
The Zhou Dynasty:
The longest-reigning orthodox dynasty, the Zhou, ruled for approximately 789 years, from around 1046 BC to 256 BC.
The Qin Dynasty:
In contrast, the Qin dynasty, which unified China under Qin Shi Huang, was a short-lived dynasty, lasting only about 14 years, from 221 BC to 206 BC.
The Han Dynasty:
The Han Dynasty, which followed the Qin, ruled for about 400 years, from 206 BC to 220 AD.
The Tang Dynasty:
The Tang Dynasty, a period of great cultural and economic prosperity, lasted for about 289 years, from 618 to 907 AD.
The Song Dynasty:
The Song Dynasty ruled for about 319 years, from 960 to 1279 AD.
The Ming Dynasty:
The Ming Dynasty, which followed the Yuan Dynasty, ruled for about 276 years, from 1368 to 1644 AD.
The Qing Dynasty:
The Qing Dynasty, the last imperial dynasty of China, ruled for about 267 years, from 1644 to 1911 AD.