Heo Jun
Work on the "Dongui Bogam" started in the 29th year of King Seonjo’s reign (1596) by the main physicians of "Naeuiwon" (내의원, “royal clinic”), with the objective to create a thorough compilation of traditional medicine. Main physician Heo Jun led the project but work was interrupted due to the second Japanese invasion of Korea in 1597. King Seonjo did not see the project come to fruition, but Heo Jun steadfastedly stuck to the project and finally completed the work in 1610, the 2nd year of King Gwanghaegun’s reign.