So the dynasty can end for two reasons. Either they run out of dudes, which never happened thanks to the hard work of many, many concubines, or the emperor is overthrown after a rebellion or a war. This is more or less what happened to all the dynasties, which makes it easy for me to go over to camera two and describe them in a single run-on sentence. Hi there, camera two. Leaving aside the Xia Dynasty, which was sadly fictional, the first Chinese dynasty was the Shang, who were overthrown by the Zhao, which disintegrated into political chaos, called the Warring States Period, in which states warred over periods. Oh no, wait, it was a period in which states warred. Which ended when the Qin Emperor was able to extend his power over most of the heretofore warring states, but the Qin were replaced by the Han, which was the dynasty that really set the pattern for most of China's history and lasted for almost 400 years, after which China fell again into political chaos, which only means there was no dynasty that ruled over all of China.