Zhang Zhongjing (張仲景, c. 150–219 CE) wrote the work that became the Shanghan Lun and the Jingui Yaolüe. He is the one figure in this list whose writings survive in a form close to what he wrote, though both texts were reconstituted centuries later.
His prefaces are the earliest surviving statement by a Chinese physician about why he wrote: an epidemic had carried off two-thirds of his family.