The term "Xianfeng" refers to the reign of the Xianfeng Emperor, who ruled the Qing Dynasty in China from 1850 to 1861. His reign was marked by significant challenges, including internal rebellions like the Taiping Rebellion and external pressures from foreign powers. The Xianfeng Emperor struggled to maintain control over the vast empire during a time of social and political upheaval. The Xianfeng period is also notable for the opening of China to foreign trade and influence, particularly after the Second Opium War. The emperor's inability to effectively manage these crises led to a decline in the Qing Dynasty's power and set the stage for further reforms in subsequent years.