The Chongzhen Emperor was the 17th and last Emperor of the Ming dynasty as well as the last ethnic Han to rule over China before the Manchu Qing conquest. He reigned from 1627 to 1644. "Chongzhen," the era name of his reign, means "honorable and auspicious."

Zhu Youjian battled peasant rebellions and was not able to defend the northern frontier against the Manchu. When rebels reached the capital Beijing in 1644, he committed suicide, ending the Ming dynasty. The Manchu formed the succeeding Qing dynasty.