An illustration of Cao Cao in the Sancai Tuhui by Wang Qi (Wang c. 1607).
Sources:
Wang Qi (c. 1607). A Ming dynasty illustration of Cao Cao in the Sancai Tuhui. Accessed Jan. 2020 – https://en.wikipedia.org/wiki/File:Cao_Cao_scth.jpg. Image is in the public domain.