1782–1850 · 君主 monarch
Reign name of the Qing emperor who ruled from 1821 to 1850. His order to stamp out the opium trade led to the First Opium War with Britain, ended in 1842 by the Treaty of Nanjing, which gave up Hong Kong Island.
Also called 旻宁、 绵宁、 清宣宗、 道光帝