Chinese emperors family tree (early)
Emperor Xian, the last emperor of the Han dynasty, was a descendant of the first emperor Liu Bang. Lasting for over 400 years (the first to last for more than a century), the Han Dynasty is regarded as one of the golden ages of Chinese history. The Han Dynasty was interrupted by the reign of the usurper Wang Mang, who declared the Xin dynasty (9–23 AD); on this basis, the Han Dynasty is generally divided into the Western Han (206 BC – 9 AD and 23–25 AD) and the Eastern Han (25–220 AD). The rulers of the Shu Han, one of the three successor states to the Han Dynasty during the Three Kingdoms period, were descended from the Han imperial family, and considered themselves a continuation of the Han Dynasty; they are included below.
Military history of the Three Kingdoms
On 11 December, 220, Cao Pi deposed the last Han emperor and proclaimed himself Emperor of Cao Wei. During his reign Cao Pi alienated his brothers Cao Zhang and Cao Zhi. Cao Pi deeply distrusted his close kin and reduced their powers out of suspicion of their loyalty. Cao Pi died in 226 and was succeeded by his son Cao Rui. Although Cao Rui was twenty years old, he was nonetheless appointed a regency council by his father prior to his death. By 236, three members of the regency council had died, leaving Sima Yi as the primary leader of Cao Wei. Shu Han continued to press the Wei borders and in 233, Zhuge Liang occupied Wudu Commandery. He was checked there by Sima Yi and died the following year. In 238 Sima Yi annexed the Gongsun state in the northwest. This was followed by a campaign into Goguryeo in 244 and 245. Cao Rui died in 239 and was succeeded by his adopted son Cao Fang, who fell under the regency of Cao Shuang and Sima Yi.