Emperor Xian of Han
Cao Cao died on 15 March 220. His son and successor, Cao Pi, soon forced Emperor Xian to abdicate the throne in favour of himself, ending the Han dynasty. Cao Pi established a new state known as Cao Wei (sometimes known inaccurately as the Kingdom of Wei), and he granted Emperor Xian a noble title – Duke of Shanyang (山陽公). The former Emperor Xian died in 234 and was buried with honours befitting an emperor, using Han ceremonies, and the then emperor of Wei, Cao Rui, was one of the mourners. As Emperor Xian's crown prince was already dead, his grandson Liu Kang (劉康) inherited his dukedom, which lasted for 75 more years and two more dukes, Liu Jin (劉瑾) and Liu Qiu (劉秋), until the line was exterminated by invading Xiongnu tribes in about 309, during the Jin dynasty. This practice of an emperor conferring hereditary nobility on his predecessor, from whom he usurped the throne, was known as "er wang san ke" (二王三恪).
Empress Wanrong
Wanrong (13 November 1906 – 20 June 1946), posthumously known as Empress Xiaokemin, was the Empress Consort of Puyi, the Last Emperor of China and final ruler of the Manchu-led Qing dynasty. In 1932, when the Empire of Japan established the puppet state of Manchukuo in Manchuria (northeastern China) and installed Puyi as its nominal emperor, Wanrong became the empress of Manchukuo. During the Soviet invasion of Manchuria at the end of the Second Sino-Japanese War in 1945, Wanrong was captured by Chinese Communist guerrillas and transferred to different locations before she was settled in a prison camp in Yanji, Jilin. She died in prison in around June or August 1946 and her remains were never found. On 23 October 2006, Wanrong's younger brother, Runqi, conducted a ritual burial for her in the Western Qing tombs.