Bao Gong is a typical honest official in people's minds, and he does exist in history. "Bao Gong" is a courtesy title for him. Bao Zheng (999- 1062) was born in Hefei (now Hefei, Anhui Province) in the Northern Song Dynasty, with the word Xiren. Strictly enforce the law and act impartially. There are many plays (and novels, etc. ) The description of Bao Gong in later generations. In Bao Gong's drama, Bao Gong drew a new moon on his forehead. Why? There are several views on this issue: first, it shows that he is an honest official, like a broad moon in the "blue sky" in the sky; Secondly, when Bao Gong was herding cattle as a child, he was kicked on the forehead by a rich horse, leaving a horseshoe print. Third, it is to show that he can go to the underworld to solve crimes at night, which is obviously superstition. According to relevant data, in the past, there was no crescent on Bao Gong's face, but two white eyebrows were painted on his black face to show the position of eyebrows and eyes. Since the middle of the Ming Dynasty, there have been more and more legends about Bao Gong. Some people drew a piece of white under their eyebrows and a "Sun-Moon Taiji Diagram" on their foreheads. Later, in order to make the composition beautiful, it gradually evolved into a white crescent, mainly to bring light to the lower people. (Luo) According to