Year 251 (CCLI) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Traianus and Etruscus. The denomination 251 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 250s was a decade that ran from January 1, 250, to December 31, 259.
The 260s decade ran from January 1, 260, to December 31, 269.
Year 255 (CCLV) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Valerianus and Gallienus. The denomination 255 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The Three Kingdoms from 220 to 280 AD was the tripartite division of China among the dynastic states of Cao Wei, Shu Han, and Eastern Wu. The Three Kingdoms period was preceded by the Eastern Han dynasty and was followed by the Western Jin dynasty. The short-lived state of Yan on the Liaodong Peninsula, which lasted from 237 to 238, is sometimes considered as a "4th kingdom".
Year 259 (CCLIX) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Aemilianus and Bassus. The denomination 259 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 260 (CCLX) was a leap year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Saecularis and Donatus. The denomination 260 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 263 (CCLXIII) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Albinus and Dexter. The denomination 263 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 264 (CCLXIV) was a leap year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Gallienus and Saturninus. The denomination 264 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 266 (CCLXVI) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Gallienus and Sabinillus. The denomination 266 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The Jin dynasty or the Jin Empire, sometimes distinguished as the Sima Jin (司馬晉) or the Two Jins (兩晉), was an imperial dynasty of China that existed from 266 to 420. It was founded by Sima Yan, eldest son of Sima Zhao, who had previously been declared the King of Jin. The Jin dynasty was preceded by the Three Kingdoms period, and was succeeded by the Sixteen Kingdoms in northern China and the Liu Song dynasty in southern China.
Wei (220–266), known as Cao Wei (曹魏) or Former Wei in historiography, was a dynastic state of China and one of the three major states that competed for supremacy over China in the Three Kingdoms period. With its capital initially located at Xuchang, and thereafter Luoyang, the state was established by Cao Pi in 220, based upon the foundations laid by his father, Cao Cao, towards the end of the Eastern Han dynasty.
Cao Mao, courtesy name Yanshi, was the fourth emperor of the state of Cao Wei during the Three Kingdoms period of China. He was a grandson of Cao Pi, the first emperor of Wei. Described as intelligent and studious, Cao Mao made repeated attempts to seize back state power from the regent Sima Zhao but failed. He was killed in an abortive coup d'état against Sima Zhao.
Cao Huan (245/246–302/303), courtesy name Jingming, was the fifth and last emperor of the state of Cao Wei during the Three Kingdoms period. On 4 February 266, he abdicated the throne in favour of Sima Yan, and brought an end to the Wei regime. After his abdication, Cao Huan was granted the title "Prince of Chenliu" and held it until his death, after which he was posthumously honoured as "Emperor Yuan ".
Emperor Wu of Jin, personal name Sima Yan, courtesy name Anshi (安世), was a grandson of Sima Yi, nephew of Sima Shi and son of Sima Zhao. He became the first emperor of the Jin dynasty after forcing Cao Huan, last emperor of the state of Cao Wei, to abdicate to him. He reigned from 266 to 290, and after conquering the state of Eastern Wu in 280, was the emperor of a reunified China. Emperor Wu was also known for his extravagance and sensuality, especially after the unification of China; legends boasted of his incredible potency among ten thousand concubines.
Sima Zhao, courtesy name Zishang, was a Chinese military general, politician, and regent of the state of Cao Wei during the Three Kingdoms period of China and Emperor of Jin dynasty
Yang Hu, courtesy name Shuzi, was a Chinese military general and politician who lived during the Jin dynasty of China. His advocacy for plans to conquer the rival state of Eastern Wu finally persuaded Emperor Wu to carry them out, but he did not live to see the plans implemented. He was known for his humility and foresight. Chen Shou, who wrote the Records of the Three Kingdoms, described him as a man of medium height with fine eyebrows and a beautiful beard. Yang Hu is depicted in the Wu Shuang Pu by Jin Guliang.
Sima Wang (205–271), courtesy name Zichu, was an imperial prince and military general of the Jin dynasty of China. He previously served in the state of Cao Wei during the Three Kingdoms period.
Sima Zhou, courtesy name Zijiang, was an imperial prince and military general of the Jin dynasty of China. He previously served in the state of Cao Wei during the Three Kingdoms period. His grandson, Sima Rui, was the founding emperor of the Eastern Jin dynasty.
Sima Zhao's regicide of Cao Mao, also known as the Ganlu Incident, occurred on 2 June 260 in Luoyang, the capital of the state of Cao Wei, during the Three Kingdoms period. Cao Mao, the nominal emperor of Wei, attempted to oust the regent Sima Zhao, who effectively controlled the Wei government. However, the plot concluded with Cao Mao's death and Sima Zhao retaining his status. Contrary to its intention, the coup actually increased the Sima clan's power and influence in Wei, thus providing a foundation for the eventual usurpation of the Wei throne in 266 by Sima Zhao's son Sima Yan, who founded the Western Jin dynasty.
