Xiao Xu (hexagram 9 of the I Ching: the taming power of the small)
Domain-specific term from the I Ching (易経). Refers to hexagram 9, composed of wind (☴) above and heaven (☰) below, symbolizing restraint or accumulation of small forces.
See also: 易経
The ninth hexagram of the I Ching is called Xiao Xu (the taming power of the small).