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).
History of Asia
The Han Dynasty (simplified Chinese: 汉朝; traditional Chinese: 漢朝; pinyin: Hàn Cháo; 206 BCE – 220 CE) was the second imperial dynasty of China, preceded by the Qin Dynasty and succeeded by the Three Kingdoms (220–265 CE). Spanning over four centuries, the period of the Han Dynasty is considered a golden age in Chinese history. One of the Han Dynasty's greatest emperors, Emperor Wu of Han, established a peace throughout China comparable to the Pax Romana seen in the Mediterranean a hundred years later. To this day, China's majority ethnic group refers to itself as the "Han people". The Han Dynasty was established when two peasants succeeded in rising up against Shi Huang's significantly weaker successor-son. The new Han government retained the centralization and bureaucracy of the Qin, but greatly reduced the repression seen before. They expanded their territory into Korea, Vietnam, and Central Asia, creating an even larger empire than the Qin.