Luoyang (simplified Chinese: 洛阳; traditional Chinese: 洛陽; pinyin: Luòyáng; Postal map spelling: Loyang; IPA: [lwɔ̂jɑ̌ŋ]) is a prefecture-level city in western Henan province of Central China. It borders the provincial capital of Zhengzhou to the east, Pingdingshan to the southeast, Nanyang to the south, Sanmenxia to the west, Jiyuan to the north, and Jiaozuo to the northeast.

Situated on the central plain of China, one of the cradles of the Chinese civilization, Luoyang was one of the Four Great Ancient Capitals of China.

The origin of the name "Luoyang" is the city's location to the north side ("yang") of the Luo River. The river flows from west to east and the sun is on south of the river, so that the sun shine is always on north side of the river. Luoyang has had several names over the centuries, including "Luoyi" (洛邑) and "Luozhou (洛州)", though Luoyang has been its primary name. It has been called, during various periods, "Dongdu" (东都, meaning the Eastern Capital, during the Tang Dynasty), "Xijing" (西京, meaning the West Capital, during the Song Dynasty), or "Jingluo" (京洛, meaning the general capital for China).

Cao Cao (Mandarin pronunciation: [tsʰɑ̌ʊ tsʰɑ́ʊ]; 155 – March 15, 220) was a warlord and the penultimate chancellor of the Eastern Han Dynasty who rose to great power during the dynasty's final years. As one of the central figures of the Three Kingdoms period, he laid the foundations for what was to become the state of Cao Wei and was posthumously titled Emperor Wu of Wei. Although often portrayed as a cruel and merciless tyrant, Cao Cao has also been praised as a brilliant ruler and military genius who treated his subordinates like his family. He was also skilled in poetry and martial arts and wrote many war journals.

Cao was born in the county of Qiao (present day Bozhou, Anhui) in 155. His father Cao Song was a foster son of Cao Teng, who in turn was one of the favorite eunuchs of Emperor Huan. Some historical records, including the Biography of Cao Man, claim that Cao Song's original family name was Xiahou.

Cao was known for his craftiness as an adolescent. According to the Biography of Cao Man, Cao's uncle complained to Cao Song about Cao Cao's indulgence in hunting and music with Yuan Shao. In retaliation, Cao Cao feigned a fit before his uncle, who immediately rushed to inform Cao Song. When Cao Song went to see his son, Cao Cao behaved normally. When asked, Cao Cao replied, "I have never had a fit, but I lost the love of my uncle, and therefore he deceived you." Afterwards, Cao Song ceased to believe his brother regarding Cao Cao, and thus Cao Cao became even more blatant and perseverant in his wayward pursuits.