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Wang Bao was a native of Ziyang, in Sichuan: the Sichuan area was then known as Shu and was one of the remote parts of the territory of the Han Empire.
The term Jian'an poetry covers the final years at the end of the Han Dynasty and during which the Cao family was rising, or risen, to prominence were known as the Jian'an era (196-220), the final reign era of Emperor Xian of Han: the following period is known as the Three Kingdoms era, due to the three kingdoms which divided up the Han Dynasty, and war with one another for succession to the Han empire.
After the collapse of the Han empire in 189, his great-great-grandsons Yuan Shao and Yuan Shu formed their own warlord fiefdoms in north China.