Hai Collection, Upper Volume
Radical: Fight (dòu)
Character: xi
Kangxi stroke count: 18
Page 1457, Entry 01
Pronounced xi (falling tone)
According to the Analytical Dictionary of Characters (Shuowen Jiezi), it refers to frequent quarreling. The character is composed of fight and child, with child indicating a person skilled at arguing.
Book of Odes (Shijing), Lesser Odes: Brothers quarreling within the walls.
Commentary: Xi refers to fighting ferociously.
Approaching Elegance (Erya), Interpretation of Words: Xi refers to resentment.
Annotation: Resenting one another.
Master Yang's Dialects (Fangyan): Xiexi refers to fear. In the regions of Song and Wei, whenever anger causes blocked breathing or hiccups, it is called xiexi.
Also interchangeable with the character meaning quiet (qu).
Book of Changes (Yijing), Abundance Hexagram, Interpretation of the Text: In the entry for quiet (qu), the Yao version writes it as xi, and the Meng version writes it as stifle (zhi), with the meanings being identical.
Also pronounced he (entering tone), with the same meaning.