The mystery surrounding Empress Ci'an, one of the revered empress dowagers of the Qing Dynasty, remains unresolved. On the 10th day of the third month in the seventh year of the Guangxu era (April 8, 1881), Empress Ci'an suddenly fell ill and passed away within just 12 hours, marking a significant incident in the Qing palace. She died at the age of 45, while Empress Dowager Cixi was only two years her junior, and the two women had vastly different personalities. Before her death, Empress Ci'an had attended court, but her condition deteriorated rapidly, leading to her unexpected demise. Initially, court officials suspected that Empress Dowager Cixi was involved, only to be shocked by the news of Empress Ci'an's death. The reasons behind her passing have sparked various theories, including poisoning, suicide, and misdiagnosis. However, some scholars believe that Empress Ci'an may have died of natural causes due to a long-term illness.

Empress Ci'an's life was marked by complex political struggles. Although she was not adept at managing state affairs, she played a crucial role during key moments. Her death was not only a tragedy but also a reflection of the power struggles within the Qing palace.