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).
Brief: This article tells Eastern Han’s tragic tale of integrity amid decline. It features Ban Chao’s frontier service, Cai Lun’s paper invention, and Yang Zhen’s famous “Heaven knows, earth knows” stand against bribery. After Empress Deng’s death, corrupt eunuchs and clans seized power, executing upright officials and dooming the dynasty.