西晋时期,太尉王衍喜欢谈论老庄,他所论的义理随时更改,被人称为“口中雌黄”(《晋书·王衍传》),后人便用成语“信口雌黄”来形容不顾事实,随口乱说的行为。这则小故事其实也说明了雌黄的一种功用;雌黄的颜色呈柠檬黄色,古时写字用的纸多是用黄染染成 In the Western Jin Dynasty, Tai Yan Wang Yan liked to talk about Lao Zhuang. His theory of justice was changed at any time. He was called “Huang Shu Wang Yan Biography” (the “Jin Shu Wang Yan Chuan”), and later generations used the idiom “reputation ” to describe it. Facts, random behavior. This little story actually explains the function of female yellow; the color of female yellow is lemon yellow, and the paper used for writing in ancient times was mostly dyed with yellow dye.