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Cai Lun (c. 62–121 CE) was a eunuch official of the Eastern Han dynasty and is traditionally credited with the invention of papermaking. His courtesy name was Jingzhong, and he was born in Guiyang (modern-day Leiyang, Hunan).
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During the Warring States period, Wei, once the strongest among the “Three Jins” (Wei, Zhao, Han), watched with alarm as Qin surged ahead under Shang Yang’s reforms. Determined not to be left behind, King Hui of Wei followed Duke Xiao of Qin’s example: he offered lavish rewards to attract brilliant minds from across the…