Guo, a kinship group whose members held dukedoms within the Zhou Dynasty realm, including Western Guo 西虢國|西虢国 and Eastern Guo 東虢國|东虢国; surname Guo

strokes 15
strokes after radical 9
假道伐虢 假道伐虢 jia3 dao4 fa2 guo2
to obtain safe passage to conquer the State of Guo; to borrow the resources of an ally to attack a common enemy (idiom)

假途灭虢 假途滅虢 jia3 tu2 mie4 guo2
lit. a short-cut to crush Guo (idiom); fig. to connive with sb to damage a third party, then turn on the partner