255 CE
Sima Zhao, Sima Shi's younger brother, inherits his brother's authority. Sima Shi quells Guanqiu Jian and Wen Qin's rebellion. Ma Jun, Chinese mechanical engineer from Cao Wei, invents the south-pointing chariot, a path-finding directional compass vehicle that uses a differential gear, not magnetics.
Conflict & Security
Exploration & Expansion
- Ma Jun, Chinese mechanical engineer from Cao Wei, invents the south-pointing chariot, a path-finding directional compass vehicle that uses a differential gear, not magnetics.source
Health & Medicine
- March 23 – Sima Shi passes away.source
Births
- January 6 – Marcellus I, bishop of Rome (d. 309)source
- Dorotheus of Tyre, Syrian bishop and martyr (d. 362)source
- Zhang Gui, Chinese governor of the Jin Dynasty (d. 314)source
- Zuo Fen, Chinese poet of the Western Jin Dynasty (d. 300)source
- Saint Helena, Roman empress who was the reputed discoverer of Christ’s cross and mother of Emperor Constantine (d. 318)source
Deaths
- February 23 – Guo Huai (or Boji), Chinese generalsource
- March 16 – Guanqiu Jian, Chinese general and politiciansource
- March 23 – Sima Shi, Chinese general and regent (b. 208)source
- Liu Zan (or Zhengming), Chinese general (b. 183)source
- Sun Luyu (or Xiaohu), Chinese princesssource
- Fu Gu (or Lanshi), Chinese official and politician (b. 209)source