Empress Wei Zifu

Wei Zifu, posthumously known as Empress Si of the Filial Wu or Wei Si Hou, was an empress consort during ancient China's Han dynasty. She was the second wife of the famous Emperor Wu and his spouse of 49 years, and stayed as his empress for 38 years, the second longest in Chinese history. She was the mother of Emperor Wu's heir apparent Liu Ju and the great-grandmother of Liu Bingyi, as well as the older half-sister of the famed general Wei Qing, the younger aunt of Huo Qubing, and the step-aunt of Han statesman Huo Guang.