1, it is dark in autumn, but it doesn't slip away in autumn: it describes the dull, shiny and dark skin. Usually described as ugly black.
Origin: Hao Ran's Sunny Days Chapter 10 1: Ma reached out and took out a black thing from the box-palm-sized, like a cardboard cigarette case with a black cloth pasted on it and a red note attached.
2, dark color: the skin is tanned by the sun.
Source: Zhang Wu's Sweeping Passers-by in Feng Tianyou: I looked at him carefully: thin face, dark skin, faint eyebrows, and a pair of charitable eyes.
3, face black: face black and yellow.
Source: Western Han Dynasty Liu Xiang's "Warring States Policy Qin Ce": Description gaunt, black face, a face of shame.
Interpretation: thin body, listless, black and yellow face, a face of shame.
4, black: describe very black or very black.
Source: Bi Shumin's "The First Lesson of Confidence": His hair is gray, his face is as black as iron, and his eyes are like cones.
5. Li Hei: Describe a person with a black face.
Origin: The four evils of the North: Shennong gaunt, Yao emaciated, Shunlihei, Yu.
Interpretation: Shennong is thin, Yao is thin, Shun has dark skin, and Yu has calluses.