Over two centuries after the removal of the capital to Beijing, Nanjing was destined to become the capital of a Ming emperor one more time. After the fall of Beijing to Li Zicheng's rebel forces and then to the Manchu-led Qing dynasty in the spring of <answer>1644</answer>, the Ming prince Zhu Yousong was enthroned in Nanjing in June <answer>1644</answer> as the Hongguang Emperor. His short reign was described by later historians as the first reign of the so-called Southern Ming dynasty.
When did Beijing lose to Li Zicheng's rebel forces and the Manchu-led Qing dynasty?
1644