1858 in China

Incumbents

• Xianfeng Emperor

Events

• Nian Rebellion
• Second Opium War
• Taiping Rebellion
• * Battle of Sanhe
• Miao Rebellion (1854–73)
• Amur Annexation
• * Treaty of Aigun, unequal treaty between the Russian Empire, and the empire of the Qing Dynasty that reversing the Treaty of Nerchinsk by transferring the land between the Stanovoy Mountains and the Amur River from China to the Russian Empire establishing much of the modern border between the Russian Far East and Manchuria, which is now known as Northeast China.
• Panthay Rebellion
• Loke Yew leaves China for British Malaya
• Opium is legalized

Deaths

• Li Xubin, Xiang Army commander killed in the Battle of Sanhe